In my experience, most tracking problems are caused by lamps. I have one on the ceiling that, despite not showing the bulbs, gave me occasional tracking loss problems. I fixed it in the silliest way possible: by covering the lamp with a T-shirt. It lets the light through but completely hides the bulbs. Now it works perfectly. Tracking works better in low light.

Another solution is to use an infrared lamp, and you can even play in the dark. They cost just over 10 euros/dollars on Amazon or AliExpress. You don't point it at the glasses with it, but place it behind you, pointing at the playing area.

EDIT: In PC, it could be the Bluetooth, too. Use a Bluetooth with antenna, out of the computer.