Flickering Screen with macOs 10.12.4

Thanks so much @Philip. Resetting NVRAM seems to have solved the problem in my case too.

NVRAM auf dem Mac zurücksetzen - Apple Support

Yes, but not on my second monitor—it's fine.

I did this and it helped for a few days. Now the flickering is back.

Unfortunately, it only helped for a few days in my case as well.

After resetting NVRAM, the problem wasn't be solved. So I went to Genius Bar, the Genius replace the motherboard for me and it seems like everything is OK right now.

Resetting NVRAM help but only for 1 or 2 days.

Yes, I think it is related to the 10.12.4 updates. But the problem makes my work unhappy. And I'm not sure when the fix version will be released.

Can you keep us updated if the problem comes back? If it doesn't get fixed with the next update, the change of hardware becomes a more attractive option.

OK, I will keep updates. I recommend go to Genius Bar for some advice.

I tried all these options but none worked. I reinstalled the OS, 10.12.5 and preformed the resets in the post above. The flickering is till happening, although it is not as bad as before.

Had this problem, too. Flipp's suggestion about resetting the "P-Ram" worked for me.

I also did the command+P+R and nothing changed. I had the chance to reinstalled the OS but it didn't´t fix the problem 😟

How can I downgrade? My apple store only shows the latest.

I have a terrible flickering screen problem. I have updated to Mac OS High Sierra Version 10.13.

Help!!! My Mac is unusable almost.

Thank you so much Filip. It worked! Hopefully won’t start again. Appreciate your posting.

Susie