The model works just as well with 1024x1024 as with 512x512, portrait aspect ratios work decently enough, but might produce slight distortions.
Requires 3 steps for good outputs, but more is always worth exploring.
Keep the CFG somewhere between 1-3, 2 is a safe bet.
The following samplers seem to work well at lower step counts with the Karras scheduler:
-
Euler
-
Heun++2
-
LMS
-
DPM++2SA
-
DPM++SDE
-
DDIM
When paired with SGM Uniform even more samplers seem to work, I like to pair that one with DPM++SDE