HDMI 2.1 4K screen output flickering randomly

[frank000]

I have a brand new HP laptop (14-ew1008ca) that comes with Intel Arc Graphics and a HDMI 2.1 port. 

When I connect my laptop to a 4K TV (Philips 50PUL7973/F7) that supports 4K UHD 4096 x 2160 @60Hz via HDMI using a 48GBPS ultra high speed HDMI cable (1.5 M long), the screen flickers randomly at both 4K @30Hz and 4K @60Hz.

If I connect the same TV using another HDMI 1.4b input, the screen does not flicker at 4K @30Hz and the screen looks perfect.

I have all drivers and bios updated (as of today Aug 19, 2024): 

System BIOS: F.08

Intel(R) Arc(TM) Graphics driver: 32.0.101.5971 (8/16/2024)

Windows 11 Home version 23H2

I have a video recording of this issue for your review HERE

Please investigate and let me know if this can be fixed.

Thank you.

[frank000 · Accepted solution]

Issue RESOLVED ! 

I found out the root cause is the "auto low latency mode" under the TV input > HDMI Mode setting of my 4K Roku TV.

The flickering issue is gone after "auto low latency mode" is turned off. Yay !