Collisions create lag?

[Cruss]

Has anyone since the last patch dropped worked with bearings/props whatever that spins and involves 2 in 1 crafts?

I'm making a vtol system again and it seems to work okay but the more weight I add, the more it lags. I've provided a video that shows a pretty significant difference when I add some moar engines ;d

Thoughts? 

Edit:

Changing from a strut bearing to a 8 piece solar panel bearing on either side on itself does not improve this behaviour. Adding a second rcs ball for a longer axis on either side and less surface friction seem to help a bit but only marginally. Curiously, as of making history all my attempts have showed this behaviour. 

Pre making history it seemed to work smoother.

 

Edit 2: changed to thermometers instead of solar panels and that works a lot smoother!

Edit 3: until i built a craft around the system....

Edited July 2, 2019 by Cruss