PureRaw2 crashes iMac with eGPU

DXO Pur Raw 2 v 2.2.2
Demo mode.
Load a raw file. Press Process.
OS announces GPU was not properly disconnected.
10 seconds later… kernel panic.

After unplugging the eGPU and rebooting, DXO Raw2 demo works fine.

Big Sur 11.6.6, iMac Pro,
Sonnet eGPU Breakaway Box 750e
Radeon RX 6900 XT