Rally Championship 2000 Multicore CPU Problems
 

With a singlecore game runs fine under Win XP SP3, about 200 fps average.
With a dualcore, framerate starts at 120 and drops to 0 (yes, it almost freezes) within 15 minutes during a racing.
With a quadcore, framerate starts at 20 and drops to 0 within 30 seconds.

Oneprocessorlaunchtool does not help, manually changing affinity neither.
Win 95 or Win 98 compatibilty mode is also useless.

I have tried every version from unpatched retail till 5.60. Always the same problem. Cracks dont help, too.

What should i do in order to play it on my quadcore?

oneprocessorlaunchtool has to work, it locks the process to only use 1 processor, so the problem has to be something else on your system, or something outside of the process (like an anti virus, old video card drivers, old sound card drivers.. or a memory leak in the game) causing it..

It is confirmed that my problem is caused by the CPU, i googled and found users with the same problem in other forums, too. But no solution.

All drivers are up 2 date, antivirus entirely disabled and no memory leak there.
Before replacing the cpu, all was ok.

How can you be sure?

Googling a search doesnt mean its the answer for everyone, you may have a virus on your machine that is playing havoc with OPLT. As Tip said it should work, unless you havent set it correctly.

if you used oneprocessorlaunch and still had the issue then the problem is NOT with the cpu.. as the tool one processor launch simply sets the process to only be allowed to use one processor BEFORE its code is executed (changing it in task manager is AFTER some of its code has been executed)..

and as dab said googling isn't exactly 'scientific', you've just said you check with task manager, and the fact you state about different processors implies you got the results from google, and / or tried them on 3 DIFFERENT machines.. so all results from that can't be relied upon..

Opc did its job correctly.
Maybe some else related to the cpu (not the core number) is problematic.
Except cpu (before dual, now quadcore) everything is still the same on my pc.
I do not have viruses on my pc.
That problem is specific to this game.

could be driver related.. eg: physx used (unsure if it is or not to be honest), or something similar, where the driver sees multiple cores, but the process doesn't so there is a minor bottleneck there in the transfer.. that could cause a lag

have the developers or anyone on the official forums even acknowledged that this issue exists? (if so, then i would expect they're working on it)

sounds like a tricky one to solve.. can you scan the exe and report what protection it has (if any)? as that might also help a bit..

It just got a cd check and the devs are out of business for 8 years now.
Game was released in February 2000, no physx or multicore cpus did exist at that time.

Just poor coding of the game then. But OPLT should be limiting it to one core. So why your system is not allowing it is another question entirely.

You have a ring 0 debugger present in the background at the same time?

No ring 0 debugger is present at all, i just use Olly. (But it is not running when i play.)