I've just tried mine with EVERYTHING turned off that wasn't needed.
Perfect results!

Nog lag or glitches at all this time!
*Kev breathes a sigh of relief!*
I will try Cross 2.0.1 on my old laptop which is over four years old to see what results I get. (I'm intending to use that as backup if ever I need it)
@Daniel - have you tried all the usual stuff? ie. turn off unwanted startup programs, disable any programs running in the background?