PS4 Pro - Glitchy Screen - HDMI port or something else?

Hi my PS4 Pro suddenly got graphical glitches today, some times its haywire glitchy but currently its slightly glitchy but there are these rows of small squares across the screen.

The strange thing is that the screen is perfect until you start a game. Could this be a hdmi port issue or something else? Its not my TV as the glitches appear on my PSVR and I have swapped out the HDMI cables.

Thank you in advance for any help.

Sounds like an APU issue, hopefully not…!!