Are you playing a specific (like RLCraft or SkyFactory)? What are your PC specs (specifically your GPU)? Do you prefer realism or a fantasy/colorful look? Stop Lagging When Playing Minecraft with Shaders!

Often called the gold standard, SEUS Renewed transforms the game into a photorealistic experience.

: For most shader packs, you'll need OptiFine. Download it from the official site and install it.