Frame rate gets cut in half at seemingly random times

[kyledawg92]

It happens while playing both Project M and Melee. Frame rate goes from 60 FPS to about 30 for several seconds at a time. Doesn't seem to matter if I'm in the menu or if there's a bunch of stuff happening on-screen.

Occurs every 3 minutes or so. I usually don't have anything else running while playing either. PC specs in profile. Using 4.0-652 which is a netplay build.

[Link_to_the_past]

(12-19-2014, 07:37 AM)kyledawg92 Wrote: It happens while playing both Project M and Melee. Frame rate goes from 60 FPS to about 30 for several seconds at a time. Doesn't seem to matter if I'm in the menu or if there's a bunch of stuff happening on-screen.

Occurs every 3 minutes or so. I usually don't have anything else running while playing either. PC specs in profile. Using 4.0-652 which is a netplay build.

Framerate cut in half randomly most of the time -> vsync due to fps drops usually.

[drhycodan]

This happens in Metal Gear Solid Twin Snakes a lot. With Vsync off, I get 60fps all the time, but I get screen tearing. Vysync eliminates all the tearing, but it also drops my framerate from 60 to 30 quite often, making it appear like some massive slowdowns. If I get 60fps with vsync off, how come I can't achieve the same with vsync on? MGS TS so far seems to be the only game with this issue. All other games still run properly with vsync on.

[Aleron Ives]

What's the refresh rate of your monitor? Doesn't enabling vsync automatically cap your FPS at half the monitor's refresh rate (30 fps for a 60 Hz monitor), unless you enable triple buffering in your GPU driver?

[kyledawg92]

I had vsync off originally. Tried it with it on and it had the same behavior.

I tried timing it too see how often it occurs. Not 100% sure about this but the interval between slowdowns seems to increase the longer I play. At first it was like every 80 seconds and it slowly became every 120 seconds.

Also, the slowdowns occur without fail. There's never like a 5 minute period where it doesn't happen, nor will it happen like 20 seconds after the prior one. It stays consistent.

[drhycodan]

It's your CPU. AMD FX CPUs are very weak when it comes to single threaded performance.