FPS Optimizer by Xiao v2.2.0 for Bedrock Edition 1.21.132/26.30+

FPS Optimizer is a lightweight resource pack by XiaoCraft, handcrafted to improve performance in Minecraft Bedrock (version 1.21 and above) by reducing load and simplifying graphics. It removes particles, animations, fog, unnecessary effects, and does some other things specifically to make MinecraftPE playable.

Changelog v2.2.0:

- Even more optimizations
- Minecraft Bedrock 26.30.28 support

Changelog v2.1.0:

- Reduced animation speed for heavy textures
- Kept key effects unchanged (fire, portal, etc.) 
- Optimized main/Default packs, Max FPS still disables animations
- Minecraft Bedrock 26.30.21 support

Changelog v1.3.1:

- Bugfixes

- Minecraft Bedrock 26.0.26 support

Changelog v1.3.1:

- Bugfixes

- Minecraft Bedrock 26.0.26 support

Especially for low-end devices:

Thanks to it, even on a weak phone or tablet, you can see more stable frames, while remaining recognizable as classic MCBE since the textures are cleaned up but not radically changed.

Main optimization mechanics:

- removal of heavy effects (fog, particles, portal effects)
- -simplification or disabling of animations (water, fire, lava);
- reducing the load on Render Dragon;
- compatibility with most texture packs and shaders, which means you can use "FPS Optimizer + something else from texture packs for Minecraft Bedrock 1.21 (link).

Estimated performance gains:

On weak devices (for example, old smartphone with ~30 FPS at standard settings), using FPS Optimizer can raise FPS to 40-60 FPS, i.e. an increase of about +10-+30 FPS.

On medium-performance devices, where the FPS is usually ~50-60, you can expect a comfortable ~60-90 FPS or more, i.e. an increase of around +10-+30 FPS or even higher if there were noticeable drops before installing the pack.

On powerful devices, where the FPS is already high (for example, ~90-120 FPS), the effect will be less noticeable and many people won't even need the optimizer, but in any case, the increase can only be +5-+15 FPS.