I´ve found a bug in the new OS regarding the Cabinet section. It apperas if you´re using a cab from a user (like Till´s Cabinet Pack).
I´ve upgraded my Kemper to OS .2.3.0 Beta and was wondering about the lot of mid-Frequenzes in my sound. So i checked all the parameters and the cabinet section. The high and low shift parameters were set to +0.0 and +0.0. I turned the low shift parameter to <0.0> and the problem was solved. So i saved the rig.
Then i switched to a clean rig and back to the rig with the problem. And it appeared again! So i kept playing my guitar while switching between the problem rig and the clean rig. And i could hear clearly that there are those heavy mid-freqenzes about 4 or 5 times out of 10 when i switched the rigs. so it´s not like this is a constant bug.
Hope you understand the problem^^