Can you please tell me if this issue of "freezing" has been resolved? I am ashamed to say I have owned M4 for a loong time but have only just gotten around to playing it through in anticipation of M5 and I am having the same problem. I can jump to the island and continue straight out through the opening, but if I try to jump towards the left where I believe there is a secret room, the game freezes and I have to manually shut it down.
I am happy to ignore the secret room and continue on regardless, but I wondered if there was an easy "fix". Today I uninstalled the game and then re-installed it from your site in case there was a new build, but it still happens.
By the way, although this is my first posting on the forum, I have been a long-time background lurker, reading other posts and getting loads of help from the regulars. I love your games and hope you know how much your hard work is appreciated. Happy New Year! (Well, I'm a tiny bit early, but we're nearly there.)