I had a very strange behaviour yesterday on a show. I activated the tube preamp on one channel and after that, the compressor on this channel didn’t work anymore. I de- and reactivated the in-button several times, but nothing changes. Of course I lowered the threshold, highered the ratio, changed attack/release times. Nothing helped. The Input levels were shwon as aspected but whatever I tried, there were no gain reduction at all.
I used just the standard compressor. I didn’t change it, because it was in a live situation. Thats why I also didn’t wanted to de-load the tube preamp. I just switched it on and off, what did’nt help.
Anyway, I had the chance to try it again today and everything worked as expected. So, for some reason it was “cured” by just switching off and on the SQ. I guess these things can happen on every software based system.