I recently just picked these up and have them tuned in icue, but noticed a 1-2 second delay when starting a youtube video or playing a game...
Does not happen when 3.5mm wired (but can't eq that connection 😞 ) Only seems to happen when usb wired or on wireless.
sounds like a device issue, but try reinstalling the firmware if you can.
I kinda know what the issue is and know how to fix it but it voids the warranty, so if you're <1yr from purchase just rma it.