Avast cuts FIOS download speed in half

[glnz]

 
Pondus - You know, I don't know where to go on my browser to actually download a big enough file through the browser.  Even at 400 Mbps, it would have to be a very large file for me to try to clock it.

And unless it's from a safe source, I would normally want Avast on the job to make sure it's not dangerous.  But for the test I have to turn it off, at least temporarily.

What do you suggest?
 

[Pondus]

You could try SP3 for XP, think it is over 300mb

And you are not going to run it, just download and delete   


Or maybe Linux Ubuntu  1.8GB 

If you click this download should start
http://releases.ubuntu.com/18.04/ubuntu-18.04-desktop-amd64.iso?_ga=2.205229394.312113618.1525285720-547507667.1525285720

[Gopher John]

http://ftp.ussg.iu.edu/linux/xubuntu/16.04/release/xubuntu-16.04-desktop-amd64.iso

It's 1184 MB.  Should be big enough.

[dustinr26]

 
Just got Verizon 1Gbps Fios on April 12.

After initial wonderful results on www.speedtest.net (regularly 2ms ping, 900± down and 920± up), I noticed that download speed was sometimes much lower - between 400 and 550 Mbps, which is half of what is expected.  Upload speed stayed high.

Now I know it's Avast.  When download speed was lower the other day, Verizon's own speed test said that the router's speed was good in the 900s but my "device" had an issue.  (The "device" is my Win 7 Pro 64-bit PC, on which I'm typing now.)

That was a surprise, and then I remembered that Avast had been the culprit a few times in the past when things went funny.

Sure enough!  When I temporarily disable Avast's shields, the download speed goes right back up to 800-900 Mbps.  When I re-enable the shields, the download speed is cut in half.  I also see in Task Manager that AvastSvc.exe *32 goes like crazy and uses up close to 100% of the CPU during the download.

Now, this is not the end of the world, since even 400 Mpbs download is 50 times faster than my old DSL, but it is ANNOYING.

Hey, Avast, what's the problem?  Can't keep up with the world?  Please fix.

Thanks.
 

Recently went from Comcast 150down 20up to ATT Gigabyte Fiber and noticed same thing. With Avast WebShield on average speed test is in 4-500mbps down and upload always maxed at like 930-948mbps. If I disable Web Shield then I get speed I am paying for and every speed test I run gets over 920-930mbps and upload 930mbps. I have had Avast since like 2009. Is this something that will be getting fixed as Gigabyte internet is starting to get more available. I know that even with speed test being half what I am paying for is still 3-4 times better than what I had previously but I just feel like now I am being handicapped by my Antivirus..

[bob3160]

 
Just got Verizon 1Gbps Fios on April 12.

After initial wonderful results on www.speedtest.net (regularly 2ms ping, 900± down and 920± up), I noticed that download speed was sometimes much lower - between 400 and 550 Mbps, which is half of what is expected.  Upload speed stayed high.

Now I know it's Avast.  When download speed was lower the other day, Verizon's own speed test said that the router's speed was good in the 900s but my "device" had an issue.  (The "device" is my Win 7 Pro 64-bit PC, on which I'm typing now.)

That was a surprise, and then I remembered that Avast had been the culprit a few times in the past when things went funny.

Sure enough!  When I temporarily disable Avast's shields, the download speed goes right back up to 800-900 Mbps.  When I re-enable the shields, the download speed is cut in half.  I also see in Task Manager that AvastSvc.exe *32 goes like crazy and uses up close to 100% of the CPU during the download.

Now, this is not the end of the world, since even 400 Mpbs download is 50 times faster than my old DSL, but it is ANNOYING.

Hey, Avast, what's the problem?  Can't keep up with the world?  Please fix.

Thanks.
 

Recently went from Comcast 150down 20up to ATT Gigabyte Fiber and noticed same thing. With Avast WebShield on average speed test is in 4-500mbps down and upload always maxed at like 930-948mbps. If I disable Web Shield then I get speed I am paying for and every speed test I run gets over 920-930mbps and upload 930mbps. I have had Avast since like 2009. Is this something that will be getting fixed as Gigabyte internet is starting to get more available. I know that even with speed test being half what I am paying for is still 3-4 times better than what I had previously but I just feel like now I am being handicapped by my Antivirus..

Handicapped is the wrong word. If you expect the file to be scanned to keep you safe, you also need to realize that there will be a certain amount of overhead.
You may be correct in being concerned about the amount of overhead but, there will always be a difference in speed between scanning the file and not scanning it.

[glnz]

 
This issue remains unfixed.
Hey, Avast - what are you doing to get your review speed up? 

[glnz]

 
This issue continues on my Win 7 Pro 64-bit machine with Avast as the AV --  - with the very latest Avast 19-1-2360 --

There is NO slowdown on my system -- EXACTLY the same hardware* -- when Windows Defender is the only AV - not Avast. 

Avast - when will you fix?
 
*  It's actually one machine that dual-boots Win 7 (with Avast) and Win 10 (with Windows Defender), so yes it's the same hardware. 

[lackschuh]

Hi

I have same issue too:

https://forum.avadas.de/threads/8781-Avast!-IS-bremst-Download

Without Web-Shield: 115 MB/s download speed
With activated Web-Shield: max 60 MB/s (480 Mbit).

System:
Win 10 x64
2x Samsung Pro 850 SSD
ASUS Rampage V
32 GB RAM
Intel Core i7
1080 GTX

Is my hardware too slow and too old for Avast! IS?
So I gonna buy a new high end system...