@killrob
on my hardware the game run smooth on standard graphics setting @1980x1024 30+fps when setting the quality to max runs smooth for the first 10-15 minutes always @1980x1024 then starts to slow down to 2-3 fps when enngine animation is displayed(returns normal when switching to body tabs or car setting tabs) or when changing any option on car setup tabs so if it's not a cpu/gpu usage issue can be a minor memory managing/adressing error in the code i will run a couple of test and i will inform you anyway
tested hardware so far (with same issue different timings):
1)desktop q9650 extreme(4cores) @3.0GHz 2GB ram ddr2
nvidia gtx280 4GB VRam
2)desktop i5(4cores) 3.2GHz 8GB ddr3
nvidia gtx660 4gb
3)laptop i7 @2.2GHZ 4GB Ram
nvidia gt220m 2GB dedicated VRam
i will get results from msi afterburner stats ram vram cpu gpu usages soon i will keep you informed

edit 1:
test results on hardware 1) the game uses 2 cores only core1to max core2 to half (not the cause of the issue) ram/vram usage is average and stable (still ok) gpu seems the weak point ; keeping the window open without modify any engine parameter just keeping the screen and animation on screen (window or full borderless window) the gpu usage slowly grows from a stable 75% in the first 2/3 minutes than starts to request more power without stopping untill it reaches the 100% turns back to 75% usage when changing to non engine tabs then returns to 100% if i turn back on the engine tabs where the animation is
edit 2:
test results on hardware 3) pretty much the same just shorter timings all nominal except gpu usage slowly growing for no reason to 100%
edit 3:
test results on hardware 2) same gpu usage issue just slower growing
all tests ran at @1980x1024 higher graphical settings possible
the same test @1980x1024 with quality bar on half position was different all running smooth no strange gpu usage on all 3 pc's
thanks for reading
