Question: I've noticed since installing Visual Studio 2010 SP1 that I'm having huge performance issues. It will randomly freeze up on me quite a bit.

I had no performance issues with Visual Studio 2010 before the upgrade. The only add-on I have running is ReSharper.

I'm wondering if anyone else is experiencing performance issues? If so have you found a way to fix them?

Answer: 
I have tried to use VS 2010 only once, and I am glad we are not upgrading to it for my project. We have to shut down all other applications before we start it. Even then it can take a good 10 minutes to load. We will need the latest PC config with lots of RAM and the latest OS to get it any faster than that.
I seem to remember reading that in SP1 they switch off hardware gfx acceleration. You can re-enable it in the settings somewhere. Apparently for some people it was causing problems so they disable it by default.

I've got it installed on a few machines here and I haven't noticed it running slower, but I've got a dozen plug ins, extensions and so forth enabled as well, so it was never particularly quick...