First thing that i have noticed that might cause a problem is the FM, lots of crackling an not a very steady/smooth transision. I have compared to other vst like Serum but allso my own hardware like Hydrasynth. And im only talking about easy sinewave to sinewave.
Post your exact FMing setup in Vital with a screenshot preferably, I also have Serum and I want to do the same comparison to understand what you’re talking about
Sine waves have a lot of energy. Might lower their level.
My bag, rebboted all my shit and its now suuuper hehe