Getting Smooth Frame Rates on a Low-End PC or Laptop with Old Lighting Shaders

This pack is built to run smoothly on low-end "potato" PCs and laptops. It keeps frame rates stable during normal play and around big builds. If your machine still struggles, the pack is usually not the problem. Vanilla video settings are the bigger lever.

Tune your vanilla video settings first

Open Options > Video Settings and work through these one at a time, checking your FPS after each change:

1. Render Distance: lower it a few chunks. This is the biggest performance gain on weak hardware.

2. Simulation Distance: lower it if your world has many farms or mobs.

3. Graphics: switch from Fancy to Fast if you don't mind simpler leaves and weather.

4. Clouds and Particles: reduce or turn off for extra headroom.

5. Max Framerate / VSync: set a cap your monitor can actually show, so the GPU isn't overworking.

Test it where it matters

1. Stand in your largest build or busiest base and watch the frame counter (open the debug screen with F3).

2. Turn the shader off in the shader menu, check FPS, then turn it back on. If the difference is small, the pack is doing its job and any lag comes from other settings or mods.

3. On laptops, plug into power. Many laptops throttle performance on battery, which can make any shader feel slower.