frequent kernel panics on two iMacs

My wife and I both have iMacs running Catalina. We both have started having frequent kernel panics. This is what we are seeing in the logs:

NVDA(Graphics): Channel exception! Exception type = 0xd Graphics Engine Error (GR Exception Error)

Channel Info: [49, 0x33, 0x31, 0x121]

Version Info: [com.apple.GeForce, 14.0.0, 0x4e554e, 22469702, 355.11.11.10.10.143, 1]

ErrorDB Hash: [70ced8266b6e91e895714fe37e4dc1bd]

Anybody have any idea what is happening, and how to fix it?

Thanks