RAYFLUX PHOTOPLUS SAMPLER/SCHEDULER GRIDS
PHOTOPLUS is more fickle than RAYFLUXv1.0.
I narrowed it down to 8 Samplers and 3 schedulers. Here's a few grids to illustrate those choices.
As you can see, some or sameish, some more different, some give you more noise but also more details, some are smoother. Depending on what you're trying to do, some might perform better than others, so don't hesitate to experiment a bit!
Like RAYFLUX, keep both max shift and base shift at 1.0 and Flux conditioning stays at 3.5
If you don't know which sampler/scheduler to use, just go for DPM2 Ancestral with Beta scheduler. As a reminder, RAYFLUXv1.0 used Heun/beta.
For steps, Photoplus needs a bit more love. 14-20 steps will work but leave you with some dithering patterns in the noise, but nothing that can't be fixed with an upscaler. 24-30 steps seems ideal with most samplers.