I got this file with 160 frames, but it's taking 3 hours to render each frame so the whole animation will be 2 weeks of rendering. I brought the samples down to the absolute minimum I could (64) and activated de-noise, then I also found 128x128 to be the optimal tile size. Is there anything I am missing?
The time estimate is from an 18-core machine with 4.4 Ghz per core. CPUs are all pegged at 100%, memory is 50% utilized, and Disks are sitting at near 0%, so I appear to be CPU bound. Selecting GPU Compute doesn't use the GPU, apparently because Blender is deciding it doesn't have enough bandwidth/memory.
Here's the file, there is also a folder with dependencies required to render: https://github.com/01binary/daap-logo
The file is for a VR project, so it's rendering 6400x3200 stereo equirectangular, each frame 6400x6400.