I had noticed the same behaviour recently, Ndg fell.
I had just been restarting Aida for a while as it only happened after the PC was on for a long time for me. I think I have just traced it back to having Logitech ARX output enabled, but i had uninstalled the Logitech software a while back.
I switched from ARX to the Remote Sensor a while back, and never unticked the Logitech ARX option in Aida. However i think the issue only started around the time I actually Uninstalled the corresponding Logitech Software. After reading your post earlier today, I watched it in task manager and I could see the memory climbing ever so slightly over time.
I turned all LCD outputs off, and restarted Aida and memory was not increasing. Re-enabled just the Remote Sensor, and restarted Aida and the memory usage appears stable again now after an hour or so, where previously I would have seen it rising slowly.
