Hi Scottie,
Might need more info. Are you referring to VSE performance. I’ve only dealt with smaller sequences so don’t have too much I can help with. You might find something useful within this thread though hopefully:
I’m seeing a call for fixing the proxy system in Blender so you may not be alone in trying to work with this.
You may be already familiar with these but these may help also:
- https://github.com/cgvirus/blender-vse-easy-proxy
- https://github.com/snuq/VSEQF
- https://natrongithub.github.io/
- https://www.blackmagicdesign.com/products/davinciresolve/
Cheers and good luck!