In short: My FP5 purchased in the Murena Store hast trouble with the 90hz display setting. Switching from 60 to 90 hz works, and everything looks way smoother, but after locking/unlocking the phone, the display falls back to something not 90hz. I could bet it is even below 60 hz. Setting the display to 60 hz provides a smoother experience than the faulty 90 hz setting. Also the boot animation with 90hz seems to be broken, there are flashing white bars top and bottom of the screen (which are not present with proper 60 hz settings).
Can someone reproduce this and if yes, add a comment to my Gitlab issue?
Thanks a lot & have a nice day!
Not a Murena FP5 but I flashed /e/ manually and I can confirm this behavior for both 1.17t stable and dev.
“Workaround”: For whatever reason opening the stock camera app seems to fix this and the 90 Hz setting works as expected. Still, pretty annoying to have to do this every time after unlocking the phone.