If the 32x version is lagging, ensure you aren't accidentally running the 128x or 256x versions, which are significantly more resource-heavy.
Are you planning to use this for gameplay or for Creative building? Patrix Resource Pack Tutorial: Getting Started Guide Patrix_1.19_32x_basic.zip
Place the .zip into your .minecraft/resourcepacks folder. If the 32x version is lagging, ensure you
Install Continuity (for connected textures) and Indium (if using Iris shaders). If the 32x version is lagging
This usually means your CTM mod (OptiFine or Continuity) isn't working or configured. Ensure "Connected Textures" is set to "Fancy" in your video settings.