The main patch you’ll want is TFix/T2Fix, posted on TTLG Forums. I think it comes prepatched from GOG, on Steam you’ll have to patch it yourself.
@comicallycluttered what do you mean by very clunky? I don’t think they are at all. Except maybe the default control scheme which is pretty bad today, but you can rebind everything (or use my bind file, works for both games)