21.04.2019, 21:59
Thanks for the help. I've narrowed the problem down to amDCT. Not sure if using it with a different version of Avisynth would make a difference. There's a support thread but I don't have a Doom9 account and they make new users wait 5 days before being able to post, to keep out spammers. (Also keeping out legit users, but oh well.)
The author did release a "Testing" version 1.1 update in January 2019, I tried it and it still crashed.
The author did release a "Testing" version 1.1 update in January 2019, I tried it and it still crashed.