Laggy External Monitor

[chikenf00t]

Seems like this is a similar issue; just updated today you could try and take a look at what they did:

Lag/delay onto second screen with latest nvidia drivers

This might actually be better now with the combination of nVidia drivers 525.116 and the linux kernel 6.3.3. I speculatively installed 525.116 rather than 530.04 and allowed the kernel 6.3.3 update on. DKMS didn’t complain and I have the second monitor up and running with no lag.