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Hi @marcaufderheyde, as you have realized, it is necessary to filter the gaze signal.
There are some very basic ones you could use to improve it significantly. Check out this demo page to try out different filters: https://cristal.univ-lille.fr/~casiez/1euro/InteractiveDemo/
Perhaps you already spotted this, but we have a reusable gaze visualizer in the SDK https://vr.tobii.com/sdk/develop/unity/tools/xr-dev-tools/#a-gaze-visualizer
You should be able to find a prefab “Gaze Visualizer” or similar and put it under the camera and it should work.
Let us know how you get on. Best Wishes.