First off I'd ask what type of problems?

Now onto the AMD Processor. When they first came out AMD Athlon processors had some major problems running math. They were sluggish to say the least. That may be your problem, but it is hard to tell w/o hearing the exact problem.

It could be a fragmented HD or a misplaced driver.

But AMD Athlon processors did (not sure about more recent ones) have math problems.

Bryan