Massive Draw Delay with Fresco on brand new iPad Pro 2018 with Memory to Spare

So, I had tried Fresco on my original iPad Pro 2018 (512 GB) last year, but the delay was so bad I had to uninstall it and go back to Procreate. When my device burned out its circuit board this December, Apple replaced it; it was delivered right before Christmas. It is brand new, not a rebuild running on iOS 14.3. I have been trying to slowly rebuild my toolset on it -- a major part of which are my drawing tools. I thought I'd give Fresco another shot, but wow! It is slower than molasses with the Pencil 2 -- completely unusable. I do not have this delay on *any* of the other art and handwriting apps, and I have them all, tried them all to verify. I am literally just trying to paint with a standard brush in black on a standard blank canvas. Is there a fix forthcoming?