Ok, well, first, what an extraordinary piece of work and labour of love, Andarian. I was enjoying it so much I was almost disappointed when I came to the picnic scene !
Anyway, I can report that the swimming works fine, if a little unevenly, for me. A little choppy at times but no crash and I had a good swim about, captured a small fish and came out of the water for the picnic. Great natural dialogue, btw. As an ex-English teacher I can appreciate decent writing.
One small point if I may. The only jarring note in the entire thing so far comes when Len has been killed and I go to speak to Robin. She replies in a really cheery voice " Greetings !" Not sure that’s appropriate
Anyway, I hope that helps. If you need me to do any other testing just say. I did have one crash just before the picnic. When she offers me the picnic I chose the explore option, collected some stuff from the cupboard and came back. I then chose the let’s swim now option and it crashed. However, I reloaded, came back to that bit and the only thing I changed was that I chose the second option in the conversation and everything was fine. Don’t know if that’s any use to you.
Btw, in case it’s relevant I’m on a late 2013 iMac running Mojave 10.14.6. Can’t afford to upgrade to Catalina as its 64 bit only and I’m not sure I could still run the toolset under WINE.
Just a little update. I’ve now had another crash while escaping from the lodge and just after the waterfall. Seems to be a fairly bad one. Even after reloading it crashes at the same spot. Mind you, I don’t know my east from my west and I’ve been blundering about with Robin furiously giving me directions so it could be my fault…
Sorted first crash by taking a slightly different route across the waterfall but crashed again a little after crossing it. I think I’m just taking a wrong route. It’s hard to know precisely where to go. Amazing scenery though !