Screen flicker............

[Flybywyre]

What is the most likely cause of screen flicker ?
It seems to be slowly getting worse and as it happens on both of my computers I suspect that my monitor is on the way out
Regards
FBW

[Wing Commander Fowler]

Is it of a stable frequency and continuous or intermittent? Have you tried changing the refresh rate for your monitor at all?

[Voidhawk]

Might be from having speakers standing next to the monitors.

[Flybywyre]

Turns out it was the refresh rate, which I have now changed from 60 to 75Hz and everything is fine.
Thanks
FBW