Just doing 2x Upscale from any lower resolution is almost unusable. It starts at 30/fps and before 3% is processed it drops to anywhere from 0.1 to 4.0. A couple weeks ago I could upscale 30 minute home video in about an hour. Longer videos still averaged about 2 times their play length, but depending on the original quality, up to 4 times.
Generally, I am taking the defaults, selecting 2x upscale, and Proteus.