So, apparently choosing any refresh rate over 24 causes flickering and "digital garbage" to be displayed randomly every 5 seconds or so when hooking up this Mi Box to my Denon 2200W receiver. I've hooked other 4k devices up, and none of those have this issue, so I think it's the Mi Box. Connecting directly to the Tv works, but then that kinda defeats the purpose of having a CEC receiver. Is there anything else I can try?