Hi @vlig96, sorry to hear about your issues. I think the best way to move forward would be if you could kindly share your code with us and we can try and reproduce on our own systems. Ideally, this would be over Github, for the benefit of other users.
Please do let us know if this would be an issue. Certainly, the problem you have identified has not been identified previously, however my first thought would be to check what version of .NET you are building against. .NET Core is not currently supported, so please ensure you are running .NET Standard as VS2019 uses Core by default. I assume you are using the Tobii Core SDK API? Any further details you could provide would be helpful.