As already mentioned in a comment of this bug, the engine for Minecraft Bedrock Edition has a fixed frame delay set which leads to noticeable input delay, more prominent the less frames are rendered.
This is not a V-Sync problem and I wanted to post this here as a seperate issue, since this seems to be overlooked.
To confirm this, I used RivaTuner to set the framerate to 1 FPS. Now it will be made easily visible that every input you do, will be delayed by 4 frames / 4 seconds. Using the ingame framerate limiter and setting it to 10, a similar delay will be noticed between native limit and RivaTuner limit. This problem therefore is clearly an ingame issue that must be fixed for reducing input delays.
In other versions of Minecraft like Java Edition every input update arrives at the very next frame.
Pasi
Please do not create duplicates of existing bugs (MCPE-98861). If you have new information that is not already in a comment on that report, you can add a comment there.
Note: the relevant information from this report has been added to the Description of MCPE-98861. To discuss bugs and make requests to add more information to existing report descriptions, you might want to visit the Mojira Discord.