I'm trying to convert the Classic Era player models to Vanilla 1.12 since (as far as I'm aware) there is no way to open the Vanilla M2s in Blender and I don't want to work with WoTLK models in Blender 2.49.
I converted the Classic Era player model to Vanilla using jm2converter and loaded it in game no problem, but the animations are broken. They play for like half a second before freezing. Here is a preview: https://imgur.com/a/98gAWT8 Also, I crash in areas where there are a lot of instances of the converted player model. I assume this is because of the broken animations and not the poly count, but I'm not sure.
Is there any way I can fix this? I read some stuff about editing the M2 in 010 Editor but, after messing around with it for a bit, I still have no idea what I need to change or how.