Roku ultra flickering screen
Ever since the update my roku has video flickering on 4k video. Now before you say it is TV or cables I have brought my other one from the bedroom and used the same cable no problem. It is a premier....
Forum Discussion
Poorjohnny Thanks for the note here. A few thoughts related to this that should help resolve these types of issues:
- If you are using a 4K capable Roku device, you'll need to make sure you are using an HDCP 2.2 certified high-speed HDMI cable in order for video to play properly. Standard HDMI cables may not provide quick enough data transfer rates, and can cause video playback issues such as you described.
- We'd also recommend trying a different HDMI port on your TV to see if your results vary.
- You might also make sure you've disabled 'Auto-adjust refresh rate' in Settings>System>Advanced system settings>Advanced display settings.
Thanks,
Tanner
I had this issue with a Samsung Q8FN series TV. 'Auto adjust refresh rate' was already disabled. The only other parameter was changing HDR Subsampling from 4.2 to 4.2.2 and that seems to work. The issue seems somewhat temperature sensitive so I will have to see it it is still working after several hours but so far so good.
Besides changing the HDR subsampling to 4.2.2, for best performance I used the highest quality HDMI cable and the best quality Cat8 Ethernet cable I could find. Now the flickering and blinking occur only one about once an hour. Problem fixed!
"Now the flickering and blinking occur only one about once an hour. Problem fixed!"
TBH, I really don't consider that fixed.
