I’m running into what I assume is the same unclean reset issue with my RX580.. Whilst this patch is for the 10/12 generation only, do you have access to and any plans to look at the RX580 generation of cards?
Either way, great work on getting the 5700 working. Making the lives of all passthrough users easier in the future 
I’m almost tempted to upgrade just to have a working reset, even though the RX580 is still meeting my gaming needs 