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Hi @bfalandays, thanks for getting in touch.
There are a few different avenues you can explore:
1) You could time sync the eye-tracking clock with the computer clock and achieve this. We have a page about it @ https://vr.tobii.com/sdk/learn/technical-information/time-synchronization/
So you could read the eye-tracking data and timestamp more frequently (not Update()-loop) using this method in the Core API (https://vr.tobii.com/sdk/develop/unity/documentation/api-reference/core/#tobiixrgeteyetrackingdatatobiixr_trackingspace) and then compare the timestamp so to know if there is new data or not
2) Another option @ https://answers.unity.com/questions/1190926/can-i-invoke-function-faster-than-update.html
3) You could try placing the data capture within FixedUpdate() and adjusting the rate accordingly https://docs.unity3d.com/ScriptReference/MonoBehaviour.FixedUpdate.html#
Please try this out and let us know how you get on. Best Wishes.