Originally Posted by BarryB
Well, seems I forgot to apply as you say! Now it scrolls a lot smoother, almost as good as a 50Hz CRT but not quite! The only issue is, the 800x600 mode is in a small window with black borders and I can't figure out how to stretch it fullscreen on my widescreen monitor!
If it's just for Workbench and not games, try installing and selecting as Monitor (Sys:Prefs/ScreenMode) HighGFX disabling the size -unticking the boxes- and typing 800x600 instead to see if that works like in my configs.
If it works you could upload the config. I also want full screen 800x600 at least with Workbench.