Sounds like you’ve got the
Sounds like you’ve got the angles pretty well covered. A lot of the HDMI issues people have are when resuming from standby, or after the TV/Receiver get turned off the computer gets confused on the handshake when they’re powered back on. The fact that your signal is cutting out without anything being turned on or off has be really annoying.
HDMIYo isn’t really what you’re looking for, it’s good for redoing a handshake on resume, but having to trip it every 5-45min isn’t what it’s made for.
If you skip the receiver and just plug the computer into the TV does it have the same issue? (Trying to debug where the error is occurring) If it works fine, does your TV and receiver support ARC? If so, what happens when you do PC>TV>(VIA ARC) Receiver?