|We can't offer much help without any specs.|
"i never had these problems with XP"
Is this the exact same system that ran XP? Or is it a completely different PC? Obviously is you bought a cheap/low end system, the gaming performance is gonna suck regardless of the Windows version. But without any info, it's impossible to say what the problem is. Please post your system's specs in as much detail as possible. At least the CPU, RAM & graphics. If it's a store bought PC, just list the make/model/model number & one of us will dig up the specs.