Well this Problem sounds similar to one I mentioned a couple of years ago. I see an incrasing latency on audio input. The Peak-Meter of the encoder get’s delayed the longer mAirlist is running.
This issue is still there. I don’t really care because I only use the peak meter to get a basic information, what is going out, but the problem is still there.
I don’t think I can find the old topic of that here on the forum.
A simultanoius running OBS Studio, grabbing the same sound card input, doesn’t seem to have the same problem.
I’m running a Core i7 2nd gen, plenty of RAM, Win10 pro on SSD, 2x Delta 1010LT that provides the Lin-In to the Encoder. I hooked in the Orban Meter via the Delta Mixer, it does not make any difference if I use the Mixer or not. Also the Oraban does not show the latency, nor does the Delta Control Panel. So I would assume, that the signal Chain ist fine up to the point where mArlist picks it up from WASAPI.