What happens: Frame rate will drop from a smooth and creamy 60 fps to 30fps at seemingly random with no indication as to why
What should happen: Frame rate should maintain or stay near to 60fps unless under heavy loads on lower end devices
How to replicate: generate a new world and just look/move around for a bit. It should be clear when it does happen.
See Here and Here for video examples of the issue(links are to videos in google drive, make sure to set quality to high)
Further information: my hardware (i5 9300H and GTX 1650) are not the issue, I've played plenty of win10 edition minecraft before without this issue.
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V-sync does remove the frame limit however despite it going usually well over 60 up to 120 sometime I'm not getting any screen tearing, so this seems like a good work around for now.
I'm having this bug on my PC on 1.16.220. Maybe it's related to the fix for bad imput delay because the bad imput delay only happened to 55-60fps or up so the workaround would be set the game to 30 fps. This is just a guess. I justhope it gets fixed soon.
As it drops to 30 fps, I was guessing it was caused by a bug related to VSync, and it seems to be the case.
With Nvidia card, I force disabled VSync in the control panel (can also be done with AMD), instead I limited the refresh rate to within the monitor's Adaptive sync range.
After that I have yet to experience the framerate dip.
I have same issue. I have Dell XPS 15 9570 (Core i5 8300H, 24 GB RAM, GTX 1050). I had constant and smooth 60 fps even on battery before last update. But now framerate drops and locks at 30 just as described in the ticket.
On other hand, input lag issue I solved by RivaTunerStatisticServer by capping max FPS to 59. That worked perfectly for me. It would be great dev's reverts "input lag issue".
Game version is 1.16.220 on Windows 10.
On the latest Minecraft Previews this bug seems to be fixed. I played on the 1.19 previews and in the latest one (1.19.27) the fps isn't locked at 30fps as it always is in the main game. I'm not sure if it has something to do with the previews being a hole other game but I'm getting better framerates above 30 (got between 40 and 60 depending on the situation) pretty much all the time. I'm playing on a Lenovo Ideapad 330 [Intel i7 (8th gen) with Geforce RX150 and 12GB of RAM]
[media]I just tested this bug in the latest beta and preview and I am still able to reproduce this. The reporter of MCPE-155023 also experiences this bug in the latest preview, so it appears that this bug is not fixed, at least not for everyone.
The problem persists to this day (May 21, 2023 v1.19.83), I have a PC capable of running this game above 60 fps, but the problem persists, even using the new unlimited fps option, I still only getting 60fps, with random moments where they drop to 30fps.
My guess is a problem with Vsync, it doesn't work the same as other games where it just caps at 60fps, this Windows 10 Edition Vsync only has 2 modes, 60fps or 30fps, if your fps drops below 60fps you won't experience never 50fps, 40fps or 35fps, only 60fps and 30fps, it's really annoying to play this way, and having to lower my render distance to 8 fragments (instead of 16) to never experience these drops.
I can reproduce this consistently when doing the following:
Looking at 3 or more trees
Looking up at the sky
This issue appears to be caused by v-sync. When v-sync is turned off, the frame rate stays at 60 for the most part.
V-sync on:
[media]
[media]V-sync off: