Right, so I'm trying to do some things on my work computers, I have two, but it's not like I actually do any real work on them so I thought I'd draw. :P

Anyway, I'm having massive GIMP performance issues! I don't have these issues on my personal computer and I would say hardware-wise it's between the two I have here and they're both bad. They both also have Photoshop which seems to work fine on the higher spec one but not the lower (it's a pretty crap computer so that's not surprising). Anyway, I just can't figure out why I can't get it to work well on the higher spec computer when I have no problems on my personal computer that isn't quite as good. :/ Any tips/likely causes?