comfyanonymous
Add exp_heun_2_x0 sampler series
A preset of seeds_2 with r=1 and solver_type=phi_2.
The current heun sampler can do noise prediction or RF v-prediction, depending on the model. However, there is no preset for Heun-style sampler in data (x0) prediction.
Additionally, for ztsnr schedule, heun tends to collapse due to step size sensitivity. Thus, exp_heun_2_x0 can be a heun alternative for ztsnr.
A demo by ztsnr schedule with CFG=3.0.
The issue of the current heun is shown in the grid.
Since it's based on seeds_2, the SDE version is simple to add.
What is the model?
There is a embedded workflow in the image, so you can find it there.
What is the model?
What is the model?
There is a embedded workflow in the image, so you can find it there.
They looks very complicated lol