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Games don't feel smooth unless i have Vsync - HD 6850

post #1 of 7
Thread Starter 
Hello guys! I've encoutered a very annoying problem.In games like BF3,BC2,BLACK OPS 1 & 2,if i don't have Vsync,the game doesn't feel that smooth at all - always above 60FPS.It's not that it's slow movement causing it,it's like ...micro struterring with a single card.The weird thing is - i have it in only some games - I don't have it in Dirt 3,Gotham City Impostors neither,War Thunder,Crysis 3 .I know vsync makes the game a bit smoother but with me,the difference is night and day and i start to think it's something to do with my GPU.My second PC,e7400 and 9800gt ,without Vsync,run Black Ops on max settings with no AA with just as smooth feeling as it was with vsync on.It's just...choppy sort of and it's really annoying.Can it be something related to my CPU?A friend of mine with same CPU but 560Ti gets way smoother experience than me with my card.Yes,his GPU is better,but he plays on High,while i play on Med/High (BF3).At first i thought it happens only in games that require a lot of CPU power and that's why when i turn on Vsync,it's gone,because my CPU usage drops from 70-75% to 50-55% in BF3(64men,crazy madness) but it doesn't happen with Crysis 3.I have tested my CPU with IPDT and i passed the test,the OC is stable as rock (4,3Ghz - 1.1V,pleased with it) I'm pretty sure it's not the CPU,so can it be just my GPU being faulty somehow ,causing games to not feel that smooth without the Vsync?
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post #2 of 7
Its Not Bud, basically when your above 60fps the GPU is working as hard as it can to hit ~100fps which means that when it has to render more the fps drops, when your locked at 60fps (Vsync) it locks at 60fps and renders at 60fps most if not all of the time because it doesnt have to work as hard, so for gaming id just leave it on, you dont need to run at 61fps+ you cant tell the difference.
    
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post #3 of 7
what is your monitor refresh rate? rendering frames at any more than that (unless it's 2x, 3x etc) will lead to tearing or stuttering as you've said. VSync limits the fps to your monitor refresh rate
 
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post #4 of 7
Thread Starter 
Quote:
Originally Posted by pharcycle View Post

what is your monitor refresh rate? rendering frames at any more than that (unless it's 2x, 3x etc) will lead to tearing or stuttering as you've said. VSync limits the fps to your monitor refresh rate
60Hz monitor.I run Black Ops @ 91fps capped by the game and BF3 @ 70-80fps AVG
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post #5 of 7
Quote:
Originally Posted by hotwheels1997 View Post

60Hz monitor.I run Black Ops @ 91fps capped by the game and BF3 @ 70-80fps AVG

well there you go- enable vsync and job done! you don't want or need to be trying to output higher than the refresh of your monitor.

think about rate mismatch like this... say you have a 60Hz monitor running with a 90 Hz signal, for every 3 frames your GPU calculates your monitor can only display 2 of them so something has to give.

without vsync, the monitor could display half rendered frames (assuming no buffering) depending when it reads the data from the GPU memory (screen tearing)

or it could end up dropping frames as the gpu outputs frames 1, 2, 3, 4 but the monitor can only display the complete frames of 1, 2, 4 due to the timing (stutter)

Vsync tells the gpu to render up to the display rate of the monitor so you don't get any judder or tearing and is a good thing! You want to have vsync enabled for all your games unless you get undesirable results like stuttering due to crossfire but that's another issue!
 
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post #6 of 7
Quote:
Originally Posted by hotwheels1997 View Post

Hello guys! I've encoutered a very annoying problem.In games like BF3,BC2,BLACK OPS 1 & 2,if i don't have Vsync,the game doesn't feel that smooth at all - always above 60FPS.It's not that it's slow movement causing it,it's like ...micro struterring with a single card.The weird thing is - i have it in only some games - I don't have it in Dirt 3,Gotham City Impostors neither,War Thunder,Crysis 3 .I know vsync makes the game a bit smoother but with me,the difference is night and day and i start to think it's something to do with my GPU.My second PC,e7400 and 9800gt ,without Vsync,run Black Ops on max settings with no AA with just as smooth feeling as it was with vsync on.It's just...choppy sort of and it's really annoying.Can it be something related to my CPU?A friend of mine with same CPU but 560Ti gets way smoother experience than me with my card.Yes,his GPU is better,but he plays on High,while i play on Med/High (BF3).At first i thought it happens only in games that require a lot of CPU power and that's why when i turn on Vsync,it's gone,because my CPU usage drops from 70-75% to 50-55% in BF3(64men,crazy madness) but it doesn't happen with Crysis 3.I have tested my CPU with IPDT and i passed the test,the OC is stable as rock (4,3Ghz - 1.1V,pleased with it) I'm pretty sure it's not the CPU,so can it be just my GPU being faulty somehow ,causing games to not feel that smooth without the Vsync?

Vsync is there for a reason, just leave it on. It isnt smooth because you turned off vsync.
post #7 of 7
Thread Starter 
With Vsync,there is input lag - expecially in BF3.I don't have a powerful GPU either so when i have Vsync(or 60fps frame limiter) my card isn't working at 100% but more like 60-70% because of which in extreme situations my FPS drops lower than without vsync - because my GPU needs time to go from 60% usage to 100% again.
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