Gaming

It's been a while since I messed with it, but I'll try and give you my recollections that might be outdated.

First, GoG version, at the time at least, did not ship with the creation kit. So that sucks.

The big problem I think was the address library. Major version changes change the layout of the game's memory, which means something that directly addresses game data has to update constantly. When I was playing it about a year ago, that mod had not been updated. A bunch of more sophisticated stuff depends on that library, so it breaks a lot of dependencies.

SKSE itself works, and more basic SKSE mods like SkyUI work fine.

So I mean, the GoG version is playable. Personally I despise how much Steam has normalized intrusive DRM and basically refuse to use it. If you don't care, then you will probably have a better time with the Steam version.