OptiLite 1.21.4 CR Optimized v2

This is based directly on the uploaded Complementary Reimagined r5.8.1.
Unlike the previous version, this one aggressively reduces GPU work while
keeping the original CR shadow/lighting pipeline.

OPTILITE_FPS:
- real CR shadow pass stays ON
- shadow quality 0
- shadow distance 48 blocks
- SSAO OFF
- water reflections OFF
- block reflections OFF
- light shafts OFF
- bloom OFF
- TAA OFF
- entity shadows OFF
- detail quality 0
- clouds quality 1
- shader anisotropic filtering OFF
- colored lighting OFF
- world-space reflections OFF
- leaf/foliage waving OFF

IMPORTANT:
If Minecraft is locked to 60 FPS by VSync or an FPS limit, the game will
still display 60 FPS even if the shader becomes much faster. For a real
before/after test, temporarily disable VSync and set Max Framerate to Unlimited.
