Hi @bkasmai, sorry to hear about your issues. Indeed, that is a most unusual problem. May I ask if you are tied to using the Core SDK for a particular reason? We will be deprecating this SDK in favour of the interaction API in the near future and so bug fixing is not currently prioritised for the Core SDK.
Accordingly, it would be preferable for you to try this project setup on the interaction library which you can download @ https://developer.tobii.com/consumer-eye-trackers-interaction-library/
Apologies for any inconvenience, but should you still get the same issue, it will be easier to assign time in looking within our code. Thanks for your understanding and awaiting your feedback.