So I’ve run mods on a bunch of different games which were downloaded and installed with the deck alone. No man’s sky, lethal company, Subnautica, etc. with generally no problems but some modding software run through wine had visual bugs but the games worked as intended.
So I thought I’d try something bigger and install fallout ttw. I installed the base games from gog without issue, and MO2 ran fine with my overridden default of wine-ge. Even the ttw installer seems to work… slowly. I started it two days ago and the picture is now. I guess some mods you really are better off using a beefier computer and transferring the final product.
Good luck. I tried to do it on my Steam Deck but I think it errored out. I also tried transferring the files after installing it on my desktop but ran into some issues.
I ended up having to use Gnarly’s Repack and I think it took a couple hours instead of days