Latest update and screen issues

[Samsung_AT76V1h]

I have a note 20 ultra which is less than a year old. Everything was perfect till the latest update. Now the screen flashes every 6 mins or so. I have already wiped cache partition and played around with brightness settings, to no avail. I would rather not reset the phone. It is definitely a problem with the update as I have noticed other posts on forums talking about this but with no solutions. Any thoughts?

Thanks

[Samsung_specialist]

Hi,

Please bring your device to a Samsung Service Center to have it checked out my a technician and help resolve the issue. 

Find the nearest service center near you online, or on Samsung.com, or by calling the call center or passing by one of the Samsung brand stores. 

[Mihran]

Hey bro is your developer option enabled

[Mihran]

Maybe mistakenly the gpu flash is on that's why it's flashing