Hi Thanapoom, welcome to the community and thanks for the kind words.
The rest scale seems pretty tight to me for a character that has a fascia modelled very closely to the contours of the underlying objects. I would start with something like 0.92.
Also, I'm making a guess here, but from what you described, did you combine all the muscles and bones into one object, and then create an attachment to your fascia? That's fine if you don't run collisions. If you run collisions, this approach won't work. This is because when there are inevitable interesections between the 'islands' of your combined object, Ziva thinks these are self intersections, and can't compute the inside-outside check properly for our collision model. This could definitely cause your explosions.
If you want to run collisions at the fascia level, the underlying objects can't be combined, and there can't be any self intersections at any point in the simulation.
Also, you will likely need more than 2 substeps to compute fascia collisions correctly. Our cloth still has room for optimization so you can expect it to be slower than our tissue solves for now.
Setting the solver scale to ~10 sounds correct. Does that make the zSolver1 locator roughly the same size as the character?
It's my position that the deformer chain you highlighted won't necessarily give you a rich deformation result. For instance, muscles that dont participate at the initation of the wrap deformer will never be represented in the fascia output. This means you can't get shapes coming and going when the underlying muscles slide around and change position relative to each other.
So while a deformer-driven fascia will be faster, you're throwing away a lot great stuff from your muscle sim doing it that way.
The fat pass as I see it will give you wrinkling, high frequency fat jiggle and volume preservation, but not sliding. Sliding should be done at the fascia level.
UNLESS you try this approach: Solve your fascia and fat in the same pass
So you attach your fat (tissue) to the fascia (cloth) and still have the rest-scale and pressure on the cloth, but you switch collisions off on the fascia. So the fascia pulls itself and the fat in, but the colliisons are computed against the fat rather than the fascia. Hope that makes sense.
I haven't tried this personally but Lonnie gets good results this way.
Hope this is helpful and let me know if you have more questions!