Rage-quitting my bad computer

[Portasaurus]

Update: I cleaned out quite a bit of dust from the fans and my CPU temperature has improved, but I am still experiencing a jittery, jumpy mouse that stutters all around the screen when in-game and occasionally at other seemingly random times. Just now, with CPU temps in the 40s, I am experiencing the jumpy mouse.

I am also now plugged directly into my router and disabled my wifi adapter. No difference.

I also changed my power settings to "HIGH" (from ULTRA) and am not seeing a difference.

I also tried a different (wireless) mouse. I don't seem to have a wired mouse that I can try. One thing I haven't done yet is change the channel on my wireless router, which I guess *could* in theory be interfering with my wireless mice?

Although it seems illogical that this computer would continue to struggle to run eq, I am probably going to just end up laying down on a new dedicated gaming desktop.

Thanks everyone for the help. If anyone has any other cards up their sleeve, please let me know.