[Imp]

Seem to be several of these so will just say I have to agree with DRG the problem is not the game its your computers.
Sorry but just like a car if you do not maintain service them performance degrades over time till they eventually become unusable.
Do maintain them clean stuff out regulary including the registry updating drivers making sure you need the stuff in startup etc. If you dont do this they naturaly degrade over time, a physical clean from time to time to keep heat sinks etc free is also advisable. I cleaned out a freinds ancient PC sometime back that was similar spec to DRGs as it was running slow glitching. Alls fine with it now its had drivers updated & over 2000 entries removed.
If you are the sort of person that downloads demos etc need to do this frequntly most things do not uninstall properly you need to manually check after or your computer is soon filled up with rubbish they leave behind.
There are some graphic possibly sound issues with some operating systems system setups but the Camo games are otherwise very stable in my view I often have 3-5 other things running & the only thing I have ever noticed is on very rare occasions one unit will be a bit slow when I move it. Only 1 other game I own lets me do this the others tend to have far higher overheads or just lock because they expect to hog the system.