The setting fps is not the same to the preview version's report and the Apple development hud report. I set it 120fps but both Apple development and the preview said around 60fps. (My device is iPad Pro and I didn't limited the fps. So it is a bug.)
MCPE-172301
FPS stays at 60 even when set to 120
Resolved
Duplicate
2
(Unassigned)
Unconfirmed
iOS
iPadOS 16.6 (20G5047d) iPadOS 17.0 (21A5303d)
1.20.30.22 Preview, 1.20.30.21 Preview, 1.20.30.20 Preview, 1.20.20.20 Preview, 1.20.10.24 Preview, 1.20.12 Hotfix, 1.20.13 Hotfix, 1.20.14 Hotfix, 1.20.15 Hotfix
Retrieved
That’s max frame rate