@MikePig
the best RTG system for CV64, is Picasso96 2.0.
I'm useing from years with my CV64 without a single crash.
I've test even CGX 4.2xx, but MagicMenu was terribly slooow!
Try P96 that is free. (CGX4 and above are commercial).
Remember to delete all CGX related files, before install P96.
Ciao