Haven't tried it on my s21 ultra but it works fine on the s24 ultra.
Also it's kinda painful to play.
I much prefer CoDmobile.
So warzone is just there for the odd moment .
You can't even seem to see the players off in the distance compared to codm.
It still needs things sorted out.
With the s21 series I highly recommend installing the game optimising service.
Check my profile for official Samsung apps.
"WI-FI went down for five minutes, so I had to talk to my family.
They seem like nice people"
