Slow Screen Redraw in edit waveform

[MTUSUPPORT]

This sounds like that you have a issue with the drivers that you have installed. When you have both Microeditor 5.2b, I take it this is the version you actually have, not 5.3b, cause there was no such version, and the Microeditor 2.7b installed they will cause conflicts. The only version that I would install if I were you is the 5.2b, unless you have to use the 2.7 b for some reason.

I would try uinstalling both, and just reinstall the 5.2b and see what happens then. When you ar zoomed way out also, like above 1 second, then it will redraw very very slowly. This will also have a little bit to do with the speed of your processor as to how fast the system can redraw it also.