Ouch, this program does not support 64bit? I can not imagine that the programers at DCS would not test this on windows vista64 -- seems odd that this would be an issue (maybe it is). I know of no other game that makes it run slower... it is suppose to speed up programs because of the ability to use more memory(instead of 4, I should be able to access 12mb).
I will try it on 32. Any other ideas?