Do you have the same issue if you follow the OP’s steps to reproduce it?
Whenever a new usb device is connected, the SIM freezes for 4 to 5 seconds. I don’t know if it’s the same when one disconnects.
Provide extra information to complete the original description of the issue:
I have a USB device that keeps disconnecting for a moment. I don’t (yet) know which device.
I suspect it’s a usb power limitation issue, but it happens irregularly every do often. Each time the SIM hangs for a few seconds. Then back to normal.
It’s a bit irritating, and although it’s not the sim’s fault the usb disconnects, the pause is the fault of the sim.
If relevant, provide additional screenshots/video: