Airspy decoding restarts intermittenly

Would be strange.

I had it on my covered balcony where the temperatures were > 30°C, currently it’s 28
Could a higher message rate due to increased traffic have an impact to temperature as well?

I assume you mean that thread:

In this case using a different USB-Port was recommended. On my Pi4 there is only the power for the Uputronics connected. It was working stable for more than a week using the same ports.

But i will give that a try as well