Inconsistent collision detection and missing some hit events

Development Programming & Scripting
1

Hello dear community

I have a strange problem with a pinball simulation. My ball generates about 20% no “on component hit” events on the two flippers. The ball collides and bounces (so physics works at that moment), but no event is triggered (as I said about 20% of the time).
Especially when the flipper is in motion while the ball is colliding this problem occurs. It doesn’t matter if the collision on the mesh is set as simple or complex - the behavior is identical. Also per UCX collision.
The ball is a physics object (simulate physics is on) and generates overlap and hit events.
I have also experimented with the tick group - always the same.
Since it works most of the time I don’t assume a bug with the meshes - can this have something to do with PhysX and if so what?

I’m really at a loss as to what else I can do to reliably get the hit events.
I am grateful for any tips!

2

Did you enable CCD?

3

Yes CCD is on at ball and both flippers and its not disabled in project settings.

4

Ah, darn…

5

Thanks for your help anyway. I have now updated the NVIDIA driver again and PhysiX - now it runs satisfactorily.

6

Bizarre, it was the GPU driver?.. :-\

7

I can’t say what it was exactly but really strange. :-/