90 minutes to render TIFF sequence in AE, 10 minutes in Resolve

This is largely because After effects and most of the adobe suite are not very well multithreaded, and have not been properly or fully retooled to use GPU. In particular, effects rarely work, and if you have an effect that is not GPU, your hardware goes mostly unused. If they still made duo-core computers, that would be ideal. Intel's been playing around with anti-hyperthreading (software defined supercores), to combine cores. That should make it go faster for software like this that needs all of the frame to be worked on by one core, with uncompressed RAM storage and all of it sharing CPU with UI and preview calculations.

Resolve primarily uses GPU and has algorithms which can offload or do some effects in CPU then go back to finish the frame in GPU, so they avoid all this nonsense altogether whenever possible. To be fair, Nuke isn't exactly much faster on large scenes.

Resolve is an editor, so uses the source sequence to create the output.  But After Effects processes each frame into its RAM and creates a video from that.  For image sequence conversion, an NLE like Premiere Pro, Resolve or probably just Adobe Media Encoder will be a faster process.