Call of Duty: Warzone on PlayStation 4 received a surprise update this week to enable 120fps on PlayStation 5 via backwards compatibility, but it can be tricky to actually make work.
Fans soon discovered that in order to get 120fps on the battle royale, you have to turn off HDR (high-dynamic-range imaging) on the PS5.
I had a chat with Rich from Digital Foundry and he verified this is the case. Disabling HDR is the only way to get Warzone working at 120fps on PS5.