(also posted to stackexchange)
Here’s the link to my file (don’t worry about the textures): https://drive.google.com/file/d/1PyYTDLBEUdPtc7opcM9FJ6vaLi8TXXWD/view?usp=sharing
The rig isn’t totally mine, it’s a modified version of RoyalSkiesLLC’s rig that I adapted for my own use. The problem is that in any version newer than 2.82 the rendered animation will only show whatever pose I had on my viewport timeline throughout the render. For example if I had my timeline set to frame 1 the whole rendered animation from frames 1-30 will only show my pose from frame 1. I have no idea what to make of it, I spent a long time customizing the rig, but I would have to go back to 2.82 to use it. For mor current versions (which I would like to use) may have to construct my own from scratch or through rigify or blenrig, but that would lead to even more tweaking and customization not to mention my inability to customize generated rigs to my liking. I would appreciate any help, thanks! 