I found that in the higher version of the game, my device started to heat up abnormally and get stuck.
I opened the same archive with the same Settings in 1.18.12 and 1.20.81
(I don't have any addon installed)
The results showed that the FPS of the devices in version 1.18 was much higher than that of 1.20, stable at 60FPS in most scenarios, and the device temperature was much lower.
In contrast, 1.20.81, the average FPS is much lower than 1.18.12, and I only played Minecraft bedrock edition for an hour, and the device temperature reached 60-70 ° C at one point, which is much higher than 1.18.

The latest version of this game was a terrible experience on my device
Hopefully the authorities will find the problem and fix it as soon as possible