Crashes with McDSP plug ins

WL Pro 10 crashes with NR800 VST2 and VST3 versions as soon I try to instantiate it. This is possible in WL 9.5 Pro but it finally crashes when I hit “Render”. In WL Pro 10 most of my VST3 McDSP plug ins crash WL immediately - a few work and most of the VST2 versions. It is a mess again. Dragging the plug ins on the screen feels very sluggish in WL 10 Pro again.
This happens with the latest McDSP versions V 6.61 on HighSierra.