Head tracking lag after updating to 4.19 on GearVR

I’ve recently updated one of my GearVR projects from 4.16 to 4.19.
Since updating, headtracking on GearVR became very laggy and jittery. The framerate is stable, but tracking is just awful.

I’ve tested making new packages with 4.16 and even 4.18, both are perfectly fine. 4.19 is the only one with problems.
I’ve already looked through the project settings trying to find a reason, but nothing seems different, especially from 4.18 to 4.19.

Has anyone been through the same problem?

Thanks in advance!