Hi exax, thanks for your observation report. I cannot repdoduce this completely, but the performance monitor ingame shows the following in my case in a one male person scene with three lights on desktop (only compare the averages, i.e. the right column of values):
View attachment 542573
I usually run my game with fixed framerate of 30 fps during developing sessions, but this one is with unlimited fps on an RTX 5080 and AMD Ryzen 7800x3D. The UI is closes when measuring frames - many UI functionalities have considerable impact on fps.
What I usually observe is that the fps actually increases a bit with the plugin installed (which is kind of weird for me), and the physics time increases (which makes sense, there are quite a few dynamic morphs applied). But the increase in physics time seems very affordable to me. I have no idea why the fps is higher with total increased calculation times (1.48 vs. 1.33) - must be some VaM "under the hood" particularity. I have the physics patch installed.
If you want to further investigate this, you would have to send more detail!