yeah @Cipralex really try the Portal plugin in your chain and see the difference.
don’t worry about “parallel” etc for a minute and plug it in your chain to see the load drop.
Also; experiment with different “weights” of models like @spunktsch said.
I have created several board that feature the loadout you mentioned succesfully with medium weight models, IR cab, rever, delay, noise suppression, EQ, a separate in2 to out2 with some effects for vocals and still load it around 85% CPU.
The Dwarf takes a bit of time to get to known its quirks but if you learn how to use it, it is a very versatile unit!
Check my LievenDV’s Dwarf journal to get an idea of my personal journay