Interesting. This device isn't supposed to even have the 60FPS option yet. Can you submit feedback in the game if it's still occurring, titled "OnePlus60". Assuming you didn't do anything special to get the 60 option, and it is just there by default?

Sethyfufu

Any information regarding whether or not we will see 90FPS, 120FPS, or even uncapped FPS options in the future for the devices that could handle it?

I'm unable to give any info about that. I'd assume the phone would melt at 120fps.