I never use to pure cab, it change too much the character of the profile.
There’s a lot of way to get rid of those nasty highs.
First in the output set the high cut about 6.5/7k.
Note that you have to play some times to have your ears used to each tweaking. Especially the high and low cuts if you’re not used to that.
In the cab you can also play with the Character.
high shift and low shift are also great but be careful, they are really powerful. Try to tweak by 0.1 each time.
In general when I find a profile i like I set all the eqs everywhere at zero in the amp.
the true sound of the profile is just the amp/cab with no eq.
then instead of tweaking the post eq, I set it to pre.
it’s a lot easier to remove the muddy bass and piercing highs with the presence.
Had a eq in x slot if really you have to tweak frequencies.
Also don’t underestimate the power of booster/overdrive/distortion/shaper in front of the amp. They are really tweak able and can give you exactly the tone you want.
And always tweak your tones dry. No reverb no delay no Space, nothing