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borisbas

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Discussion starter · #1 ·
I'm having the strangest problem with pcsx2.

YESTERDAY I was able to play all emulated games normally. Normally pcsx2 exe would take around 100% CPU (in the task manager, NOT gdsx window titlebar). Today I lost about 30fps in every game and CPU usage for pcsx2 exe won't go over ~60%, the rest is Idle CPU time (again, taskmanager).

I didn't install anything yesterday whatsoever, no windows updates, BIOS tweaks, antivirus, firewall or anything, i was playing FFXII the whole day (at 100%). I've tried other games as well and they all suffer from "lost cpu time".

Process priority is "Normal", as always, and raising it didn't help. Core affinity is set at both cores. The funny thing is that it seems that when it's emulating more complex scenes (like FFX in-engine intro) the CPU usage actually DROPS below 60%, whereas when playing CGI movies use and other non-intensive stuff the CPU usage rises to about 80%.

Is this a common symptom and is there a "Cure"?

BTW, I'm using Vista 32 (freshly installed 3 days ago) on a C2D.
 
#5 ·
Check if vsync is off, it could have enabled itself somehow... Other than that... Perhaps your graphics card lowered its clocks? You should try restarting if you haven't done so.

Check the CPU usage in the gsdx window. If it is stuck at 99% - graphics card is the culprit.
 
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#6 ·
Enable V-Sync, play with it for a few minutes, exit, turn V-SYNC off, and try again. Weird I know, but this has fixed it for me.
 
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#7 · (Edited)
this same exact issue just happened to me...i cant figure out the reason why its cutting my fps. i played Monster Hunter and FF12 at 60fps constant. but when i restarted my computer i get about 20-40fps. whats the deal?

Update:
ok fixed it. instead of just restarting my pc i shut it down for about 15 minutes and everything works fine now.
 
#11 ·
Then maybe your pc is overheating...
Check the temps of both cpu and gpu.
 
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#14 ·
you're cpu's are probably entering low power states.
 
#15 ·
Intel speedstep?
 
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Discussion starter · #16 · (Edited)
Squall-Leonhart said:
you're cpu's are probably entering low power states.
Click to expand...
No, CpuZ says 9x333, in contrast to 6x333 when it's doing nothing. Also, the slowdown is caused by lower CPU usage, not lower clock speed. Restarting a few times seems to help. About 1 in 3 works.

I think that VSync could be the cuplrit. When the gpu renders a frame and submits it for displaying, it waits for vblank before actually presenting it to the screen. During that time the cpu is more/less idle, which could explain lower cpu usage.

I give up.
I'm getting those "Memory allocation failed" errors when launching VM version. That was the reason I reinstalled Vista five days ago, and now it's there again.
 
#17 ·
disable vSync then :rolleyes:
 
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#18 ·
Mad said:
Intel speedstep?
Click to expand...
intel speedstep wouldnt be the problem unless it underclocks your cpu to lets say 6x and some kind of error happening and doesnt clock it up to 9x when it is supposed to.

i havent really heard of any kind of situation where this has happened though. you can also turn off the speedstep in bios if you really wanted to. i usually do this when i need to benchmark my cpu, but thats about it.
 
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