Skyrim is really buggy on ps3 too apparently.
Plus I dunno if they've managed to fix it so DLC's will work.
So PC or 360 are the best options really.
If you haven't tried Morrowind give it a shot...lots of mods and it'll run on older hardware.
Even if you use a standard version you'll have access to levitation spells, which is pretty cool.
Games older than that require dosbox iirc
I've got them all here somewhere, but it's been a while
The Elder Scrolls Adventures: Redguard is another interesting one, but more third person action/adventure (you have a fixed character, no customisation).