dual monitor puts stress on CPU

dragnandy

Limp Gawd
Joined
Jul 28, 2008
Messages
198
I have a fairly relevant GPU, nVidia 750ti

My CPU is pretty old, a Q6600@2.4GHz. But I was still surprised when I was running 2 monitors with 2 videos and it was lagging. For example I was watching a 2k video on one, and some gifs on another, and it would lag immensely,

CPU is definitely old, but does that sound reasonable? I always thought most of the computation would be done on the GPU. Would anybody enlighten me on how dual monitors video playback work?
 

ccityinstaller

Supreme [H]ardness
Joined
Feb 23, 2007
Messages
4,236
I have a fairly relevant GPU, nVidia 750ti

My CPU is pretty old, a Q6600@2.4GHz. But I was still surprised when I was running 2 monitors with 2 videos and it was lagging. For example I was watching a 2k video on one, and some gifs on another, and it would lag immensely,

CPU is definitely old, but does that sound reasonable? I always thought most of the computation would be done on the GPU. Would anybody enlighten me on how dual monitors video playback work?
What are you "viewing" these videos in (YouTube, Twitch etc)? Which browser are you using (name and build version, go to "Help" and "About")..

How much ram does the system have? Do you have GPU-Z? If not, DL it and report what the GPU usage is while watching a video..It sounds to me like Hardware Acceleration isn't being used to be honest.

Report back with the requested information and we will see what we can do.
 

mda

[H]ard|Gawd
Joined
Mar 23, 2011
Messages
1,862
It's probably a Flash related issue.

Flash will lag on a Haswell machine (i.e. games will stutter with Twitch in the background).
 

dragnandy

Limp Gawd
Joined
Jul 28, 2008
Messages
198
Sorry guys, I haven't been able to respond as quickly.

But, I've been viewing these videos on youtube. One will be youtube, and the other may be from another embedded streaming player, or a quick gif, and such. This is running on the latest chrome browser, I'm on a different computer right now so I don't have the exact version number, but it is up to date.

Running on Windows 7

Yes, I have used the task manager and GPU-Z. That was my first investigation and found out that the CPU would be on max load, typically on chrome, because thats where the videos are playing. On GPU-Z I would hardly get any stress on them, very minimal (I'd say <20% but i'd have to double check that tonight).

I have 6gb of DDR2 ram. Yes, this is DDR2, not DDR3 :p

Are youtube videos flash? I thought they were html or something, so I didn't suspect flash. But please enlighten me!
 

Araxie

Supreme [H]ardness
Joined
Feb 11, 2013
Messages
6,440
enable hardware acceleration in chrome... that's all.. it will start to use the GPU instead the CPU. you probably are also lagging if you are using CPU as accelerator without Dual Channel ram..
 

dragnandy

Limp Gawd
Joined
Jul 28, 2008
Messages
198
@Araxie, interesting suggestion! Turns out chrome already had the 'enable hardware acceleration' already on. I turned it off, reset, and got it back on. (a little IT trick :D), but no improvements.

I played 1080p and 1440p videos on both my monitors, tested it out on chrome and FF. Turns out, it looks like a chrome problem because there is definitely less CPU stress on FF. Maybe because my FF is pretty bare, hardly any add ons and such. Any suggestions on why this happens, and if its fixable? Chrome use to be so good :(

Sorry for the large images, I tried scaling it down but the numbers got scaled terrible and unreadable.

Here is Chrome running the 2 videos on full screen on both monitors


Oddly enough, the CPU load dips down every once in awhile for a few seconds


And here is FireFox running both videos fullscreen
 

mikeblas

[H]ard|DCer of the Month - May 2006
Joined
Jun 26, 2004
Messages
12,775
Sounds like you've discovered that Chrome is a piece of shit.
 

dragnandy

Limp Gawd
Joined
Jul 28, 2008
Messages
198
@d50man, LOL you'd be surprised how quiet it actually is. At 100% on full load it never passes 60C

@mikeblas ...:(
 
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