wiim amp pro

(I asked a similar question before but I now want to try to troubleshoot/locate the problem) I use one of my TV's as a 3rd monitor (PC) and have the following setup: I have an Aune X8 DAC connected to my PC via USB (and the same DAC is also connected to my WiiM AMP Pro). On the WiiM, when I...

I just received my Wiim amp Pro and after hooking everything up I unfortunately noticed three problems. 1. a very annoying buzzing sound when the HDMI cable is plugged in 2. If the HDMI is connected to my TV (Which I also use as a 3rd monitor in this setup) I suddenly have a gigantic input lag...