Can people try the following options:

Boot your kernel with:

radeon.runpm=1 radeon.dpm=1 [ radeon.hard_reset=1 optional one]

Get the correct PCI address from sysfs)

echo high >
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/power_dpm_force_performance_level
echo performance >
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/power_dpm_state

You will get hotter, is your GPU stable during use?

I've been running it this way now and no resets have occurred, rebooting works
w/o issue also.