Damn Bingo I’m so happy for you. I can still send you some software for nothin if need be my friend.
What make is ur screen btw? And are you running this through an AV reciver?
HDMI cables have a variation of what they can proses by a revision no. like 1.4 can now does 4K, any previous HDMI leads do some sort voodoo ship between any hardware.
It’s quite an old Grundig telly but the same problem afflicts people with modern screens and digital projectors. PS3 seems to be particularly susceptible.