Has anyone come across a high pitched ringing issue with Chauvet DJ EZLink Par Q6 BT fixtures? Can't seem to find anything on GS or other forums about it. Here's some context:

We installed these fixtures in a room where a lot of audio recording happens. Also a critical listening room from time to time. When the LED intensity increases (AKA, make it brighter) a high pitched, barely audible ring somewhere around 5k appears. This happens whether it's controlled via DMX, manually, 4 channel, 8 channel, etc. It also doesn't matter whether the LED is 1% or 100%, it all rings. The tone changes slightly based on the color of LED, but it's still the same volume.

In any other live scenario where you've got a 95db + PA, you would not notice it. But with all 8 of these fixtures on at the same time, the ring is quite present in this small room.

Has this happened to anyone else, or am the only audio engineer who still has some HF response left in his hearing?