My WiFi hotspot is always running along with ethernet cable connection. It's also running in the 2.4ghz band and I've never had an issue with USB3 on RPi4.

The only exception is when using 16bit drivers with the ZWO ASI120mm mini guide camera. Not sure if it defaults to 8bit of not in newer builds but it always caused Kstars freezes and crashes during plate solving.

I've imaged many many hours, no problem with 2.4ghz Hotspot and RPi4.

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