Do Antiviruses Still Slow You Down? (2020) - YouTube

Channel: unknown

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- Antivirus software is notorious
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for slowing down computers to the point where,
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without even thinking about it,
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it's the first thing that I remove when I get a
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new system with, you know, McAfee,
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or Norton pre installed on it,
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but while anti malware apps have grown in sophistication,
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along with the nefarious programs they're intended to fight,
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modern computers are also a lot faster than the
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Pentium 166 MHz that I was running when I formed that habit.
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So then, is running antivirus in the background
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still like driving around with the handbrake on?
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Wow, that sounds horrible.
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(upbeat music)
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(music fades out)
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To understand why security software
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would have any effect on system speed,
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we need a little bit of background.
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As I talked about in this Fast As Possible episode from,
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2014, antivirus and anti malware software,
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are not quite the same thing.
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Antivirus programs primarily focused
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on garden variety bad guys, like viruses,
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worms, trojans, and key loggers.
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And they would run constantly in the background
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so that nothing could slip through,
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sapping precious system resources that could have been used
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to render Lara Croft's,
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(clears throat)
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tank top in more detail.
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But because antiviruses focused more on a specific set
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of known threats, they could miss some newer malware.
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Kind of like that famous attention experiment
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with the gorilla.
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That is where anti malware programs came in.
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They were designed to do periodic deeper scans
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of the entire system looking for patterns of behavior,
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or for symptoms that might indicate an infection,
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rather than a specific identifiable nefarious program.
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These deep background scans,
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obviously take up some CPU usage,
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and especially in the days of mechanical hard drives,
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would cause your disc to thrash around,
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reducing system responsiveness while they were running.
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Making matters worse, most good anti malware suites,
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included antivirus features,
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like real time threat monitoring,
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and downloaded file scanning,
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so that's like a textbook triple resource hogging whammy.
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On top of that, as the types and numbers of malware
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expanded, so did the databases of known threats,
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so it took more and more time and resources
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to check through a list
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that was growing longer than a CVS receipt.
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That is why PCs were slowed down
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by security applications in the past,
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but how bad is it today?
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To find out we ran some tests, choosing a few common
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security apps, and without protection.
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You know, as a control.
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Our test setup was designed to be representative of a high
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performance gaming rig,
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but one from a few years ago,
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and we ran it with, and without Windows security,
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the built in protection that as far as we know has a fairly
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minimal performance impact.
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We also used two of the most dread inducing anti malwares
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to ever haunt the prebuilts and laptops of PC enthusiasts;
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McAfee, and Norton.
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(angry computer noises)
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We focused on mundane everyday activities.
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You know, how long it takes to download, install,
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and launch an app.
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Unzipping, transferring files, and booting windows.
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That sort of thing.
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We also ran a handful of more
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enthusiast performance benchmarks,
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and there are actually a few surprising
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findings in our results.
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First up, is that a modern quad-core CPU
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should be enough to handle basic background scanning.
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Our gaming tests were pretty much a wash,
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and our worst outlier in Cinebench,
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compared to our control was McAfee,
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with only about a three percent performance difference.
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Here is what blew my mind though.
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Even with a PCI Express and DM SSD,
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workloads that hit both CPU
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and storage were almost
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across the board slower with anti malware running,
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than without, and both Norton and McAfee
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had measurably higher performance impacts,
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compared to Windows Defender.
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Unzipping a file took 35% longer
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with Norton installed on the system,
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compared to our baseline,
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and launching Adobe Premiere Pro,
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was anywhere from 5 to 30% slower with Windows Defender,
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and 25 to 35% slower with McAfee and Norton,
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compared to nothing at all.
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Nothing at all, nothing at all.
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Lttstore.com.
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Granted, in most cases this equated to just a few seconds,
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but percentage wise it's just way more than I expected
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to the point where I think there is still a strong
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justification for the outrage about system builders
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bundling the software, especially on entry level machines.
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I mean, even places where I didn't
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expect it to matter at all.
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Like, I would have told Riley not to bother with a
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file transfer speed test,
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we ended up seeing a shocking impact.
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All of our anti malwares
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were within a few seconds of our control
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when we were transferring a one gigabyte file
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to a server on our local network.
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But remember, that's a scenario where the bottleneck
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is our ethernet connection.
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When transferring to a local SSD,
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the difference was eight seconds with Norton,
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and over 12 seconds with McAfee running in the background.
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What the actual f-
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(bleep)
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In fairness though, this is a lot better than things
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used to be, where a scan would start in the background
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and you would literally go and make some hot chocolate
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or something while you wait for a game to fire up.
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So, how have we gotten here?
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Well first off, as I mentioned, PCs have gotten
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exponentially more capable then they were when I was a kid,
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and tasks that used to take up a
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significant portion of the CPUs power,
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now take a fraction of a percent.
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Second, remember those big malware
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databases we were talking about?
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Well they used to be hosted locally, on your PC,
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but now anti malware companies host them in the cloud,
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where servers can take some of the processing
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giving your personal computer some sweet sweet relief.
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Mitigating some more of the performance sucking effects,
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the first time that we launched an app,
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or downloaded a file, or did whatever,
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it actually took longer than subsequent tests.
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This makes sense, since once that app,
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or that process has been scanned,
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the security software knows that it's probably still safe
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the next time that you launch it.
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And it's nice that this feature worked because
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even if there is a performance impact initially,
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at least it doesn't carry on scanning the same thing,
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slowing slowing down every task, every single time.
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So in conclusion then, we're not saying;
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"Hey, go bareback, it's great, you're gonna love it"
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protection is important, especially for people
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who engage in high risk behavior online.
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We're just saying that this video has
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definitely inspired us to be more cognizant of our
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background tasks,
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because even ones that I have generally come to accept as
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just part of the package, like Windows Defender,
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could be a digital boat anchor on your PCs performance.
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If you want to learn more about this,
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there are entire websites dedicated to exhaustive
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anti malware testing,
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so if you have a few seconds,
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and those few seconds matter to you,
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we're gonna have some links in the description
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so you can check out which ones will let you stay secure,
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and speedy at the same time, like some kind of
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tortoise-hare hybrid.
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Not sure anybody wants that,
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Don't wait, it's great.
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Speaking of great, if you enjoyed this video,
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maybe check out our-
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hey, we did a bold stuff that manufacturers say.
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Normally I would say the actual word
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and just bleep it in post,
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but my sons here watching me record right now so
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that's why I'm not doing that, but we did
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one of those, you know, some things manufacturers say
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about Windows game mode and whether it makes a difference.
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I'm gonna link that one down below