Thanks a bunch. Really great community here!
Yes, changing the badonk amp for the slo did the trick. DSP and block usage is now something im very aware of.
The headphones are my old Sony MDR-1A and i think the issue is the mic. I have to pull the TRS adaptor just slightly out in order to get decent sounds. If it's all the way in it sounds like using wet effects before a heavily distorted preamp, all mushy and very brittle and thin.
But apart of from that, and just from using stock presets of the SLO og Rhet Shull, holy damn this thing is great.
Now I just need a powercab or Laney LFR go get some "in the room" sound.