Mac Studio M2 Max flickering with EIZO 27" display

Especially after it wakes-up from sleep (under Sequoia 15.2), the screen starts to flicker during e.g. games.

It feels like the processor is not coping, and has a lot of lag.

Apparently, EIZO is aware of flickering.

I had U-Green active cables - the CG277 being DisplayPort 1.2 was not recognised (the CG2730 was), but a lot of this flickering.

I am now on StarTech USB-C > MiniDisplayPort cables. CG277 is recognised, but flickering is still there.

Often it suffices to reboot the Mac for the problem to vanish - until it comes back after another "Mac Sleep"...