Screen Flickering - 2017 iMac 27' - Is it GPU or Processor?
It happens especially when using graphics or video programs.
I tried everything. Would you please give me some advice?
- reset NVRAM - done
- reset SMC - done
- new fresh installation - done
- I connected the second monitor, and the flickering continues on the second screen at the same time.
- I used the screen recording, and everything seems fine in the record; there is no flickering in the screen record, but there was a lot of flickering in real-time. So, the recording shows nothing.
I guess it is not a screen hardware problem (the second monitor has also flickering when I connected)
What do you think? Is it about the GPU, graphic card, or processor?
Ist dies eine gute Frage?