I once had some quirky behavior using a couple of presets (with amp block advanced parameter tweaks) built in firmware 7 or 8? reused in 9.xx; to fix it: I reset the amp and cab block in those presets to default and rebuilt them in place - everything worked fine. No problems with 10.01 whatever.
Yo también tengo este problema, ya intenté reinstalar el firmware varias veces.
Have you tried to reinstall firmware? Checked out the link in #6 above? Maybe contact Fractal Support.Im having exactly the same problem, have any of you solved?