I can run multiple X instances via
startx -- :1, and switching between the X sessions is easy, but switching back to my account, which has a lot of visual extras in it, takes a long time, in the 10-20 seconds range, and very inconsistent in how long it takes. (Switching to the 'stock' account is decent.) Is there any way to make this time shorter?
I am running Compiz (with a lot of extras) on a nVidia graphics card.