I’ve seen this tool posted as well, but I haven’t used it yet to comment on how well/easy it works.

https://github.com/CMahaff/lasim

I’ve used Lutris in the past to good success. Add as non-steam game then look for community control profiles. Also protondb for game settings that may improve performance. I’ll be honest, I’ve been fairly limited with GoG and Epic games.

Neverwinter Nights Enhanced Edition worked well, just a bit small on the screen. Using the touch pad was just fine since that game loves mouse controls.