Strobing pixelation on MacBook Pro

Kiwi JP wrote:

I have noticed a strobing pixelation in images and video on several sites I visit.

It seems random as some photos and videos don't have it, but it is a constant on certain sites and banner ads. I'll upload a video of the phenomenon. It seems to be getting worse. I think it may have something to do with the GPU but not sure. Does anyone know what it could be?

[Edited by Moderator]

Sounds like a browser must be involved here— but you neglect to say which browser.

My best advise try a different browser and compare your results.

To trouble shoot further you can:

—A SafeBoot Use safe mode on your Mac - Apple Support will sort many anomalies

Does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, third party system modifications and system accelerations are disabled.

Login and test. Reboot as normal and test. Caches get rebuilt automatically.

This test will tell you if third party interference; most extensions etc are not loaded in safe boot mode.

—Test issue in another user (or guest user) account Change Users & Groups settings on Mac - Apple Support

This will tell you if it a universal issue or isolated to your user/admin account. 

unplug all non-essential peripherals when testing

Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus

all known to cause issues on the macOS

if no insight or resolve—

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple for support and service - Apple Support