Pyzchiva vs Stelara

In April I was swapped from Stelara to Pyzchiva and since then I've been far more fatigued than I was on Stelara, my muscles ache a lot, I can do little exercise, feeling a terrible malaise, and have had a sore throat that literally hasn't stopped for one day. I've also had some psoriasis appear on my scalp which makes me think that Pyzchiva might not be as good as Stelara. I do have CFS (chronic fatigue syndrome) caused by COVID but that's never caused me to feel like this even at it's worse, and the sore throat for these four months is quite a telling sign. I've had blood tests which came back showing that on paper I'm healthy and there are no indications in them at all that there's any underlying health issues. Has anyone else been swapped to Pyzchiva and had any issues with tiredness/fatigue? Thanks