It's probably due to optimizations in high level code rather than the 32/64-bit aspect, but I'm just guessing. (To get that level of slowness you really have to

It's probably due to optimizations in high level code rather than the 32/64-bit aspect, but I'm just guessing. (To get that level of slowness you really have to fuck up at a higher level.) VS seems to be a WPF app nowadays, so I assume the UI is written in C#.