Performance issue in certain situations

[fhomasp]

Hey,

For some reason when a new map is loaded the graphics performance is greatly deteriorated. I'm talking 16-17 fps instead of always above 40 fps. Usually the average framerate is around 70 fps.

I can fix it by alt-tabbing out of the game and return several moments later. This mostly fixes the issue for that map, not always, but in that case doing the alt-tab action again fixes it. I've never had to retry more than 3 times.

But needless to say, this is irritating. I'm playing canyon to improve my skills and of course as everyone else I try to win. When I have to do the alt-tab scenario I usually lose around 1 to 2 minutes, which gives me a sort of handicap

I did update my graphics drivers and noticed an overall increase in performance, but the issue remains.

If anyone knows what's going on, by all means enlighten me.

My system:
Intel Q6600 3.7 ghz
Nvidia 8800 GT
4 gb memory
win xp

[tcq]

Dunno about this problem, but i'm experienced something similar.
E.g. i'm driving a multi lap and everything is okay on the first round. But then, without any warning, the FPS drops down over 50% (in a section where i had no problems with in the round before).
Sometimes this happens in round 4, sometimes in round 2. After a short time, the frames go up again to the normal level (sometimes after 5 seconds, sometimes i need to drive a whole round with dropped frames).
If i get this problem on a normal TA server, i simply restart the round and it's okay again. But it's unplayable for laps.

Tried several gpu drivers, but no one worked really well. Under Win7 64bit i haven't had this problem with the 270.28 driver.

PC config:
Intel Core 2 Duo T7500 @2,2GHz
Nvidia 8600m GT 256mb driver:270.61
Win7 32 bit

[fhomasp]

No suggestion of any kind? Nice support forum.