Game 3 and 4 (The Curse of Monkey Island and Escape from Monkey Island) come with the caveat that they are from the Windows 9x period. Getting them to run reliably on a modern computer is an adventure in its own right.
4 is indeed very much a pain (and so are the controls). The PS2 version is better than the PC version in my experience.
I always enjoyed this meta game back when it was fiddling with config.sys and such. Shouldn't need that for a 9x game, but other fiddling would make sense.