good and stable physics calculations without upscaling 10 times

hi,

its the second time that i have this problem....and its not only me...after upscaling 10 times you get good and working calculations.

(i work metric units... 1,0 unit scale...)

so until now it is upscaling, calculating and collection instance back linking, scaling down...what a hack...

please please check this and work it out

thanks thanks a lot, all the best!