[PLUG] Why Does USB C Clobber My Mouse?

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Sometimes when I plug in my drone which has a USB C connection, the 
mouse of my Gentoo (~AMD) system freezes.  It will move a little, but it 
gives all the symptoms of having the Interrupt stolen from it.  Oddly, 
this does not happen all the time. Anybody know why it happens or what I 
can do to prevent it?

I've got a nifty DJI Mavic Air drone that takes fantastic 2K video at 60 
FPS.  I store the video on a SD card, but it's a pain to remove the card 
and stick it into a USB adapter.  I prefer to simply plug the drone into 
a USB C port and mount the drone. About 30% of the time when I do this, 
the mouse gets clobbered. It will move, but erratically; most movements 
of the physical mouse do not generate a corresponding movement of the 
mouse pointer.   If I unplug the drone, the mouse returns to normal 
instantly.   I interpret this to be because the drone is stealing so 
many interrupts that the mouse's USB interrupts are rarely seen.

Oddly, this does not happen all the time.   It seems to come in 
spurts.    I run the bleeding edge in Gentoo, so these __may__ be 
related to updates, but since I update every day or so, I can't be sure.

Anybody have any suggestions or explanations?

TIA!

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