Recommended macOS Version: macOS Catalina or Big Sur

For a 2012 MacBook Pro, using OpenCore Legacy Patcher (OCLP) to install a newer version of macOS can provide a refreshed experience. However, macOS Ventura may be too resource-intensive for this older hardware, potentially causing the slowdowns you've experienced. Here's a recommendation for a macOS version that should work more efficiently:

1. macOS Catalina (10.15):

   • Catalina still offers a modern macOS experience while being less demanding than newer versions.
   • It supports most contemporary apps and services.
   • Performance on older hardware like a 2012 MacBook Pro is generally better compared to newer macOS versions.

2. macOS Big Sur (11):

   • If you want a more recent OS and your MacBook Pro has sufficient RAM (8GB or more recommended) and a solid-state drive (SSD), Big Sur could be a viable option.
   • Big Sur introduced significant interface changes and feature improvements while maintaining reasonable performance on older hardware.

Additional Considerations:

• Hardware Upgrade: If you haven’t already, upgrading your MacBook Pro with more RAM and replacing the hard drive with an SSD can significantly improve performance, especially if you opt for Big Sur.

• Testing Both Versions: If feasible, you could test both Catalina and Big Sur to see which offers the best balance of performance and features for your needs.

• Backup Data: Before downgrading or changing the operating system, ensure you back up all important data.

• Check App Compatibility: Ensure that the applications you need are compatible with the macOS version you choose.

• Battery Health: On older MacBooks, battery performance can impact overall system performance. Check the health of your battery and consider replacing it if necessary.

Choosing between Catalina and Big Sur largely depends on your specific usage needs and the condition of your MacBook Pro. Both should offer a better performance experience than Ventura on a 2012 model.