PC into TV - sound feedback (frequency?)

[faxfan]

Hi All,

I'm putting a PC (Navida GPU, HDMI) into my TV and everything works in terms of resolution etc. But when I run a game or have a browser of predominantly one i.e. white. I get terrible feedback (sometime quite a lot sometimes very little buy always there) - it's like a frequency feedback noise, if that makes sense?

Full setup

PC (Nvidia Titan X - Series 9) -> Sony X93 HDMI port -> HDMI ARC -> Arcam AVR 550
OR
PC (Nvidia Titan X - Series 9) -> Arcam AVR 550

Tried -

-> Different cables / ports
-> Different frequencies 24,50,60 - the TV and PC appear to sync fine
-> Colour spaces RGB / YBr etc. - again TV and PC appear to sync fine

Any ideas?

 

[faxfan]

It's really the opposite when sounds are playing i.e. youtube it's fine, it where there is no sounds you get the feedback - though I suspect the feedback is there just can't hear it because of the other sounds.

I'll pop a video up later