Hello! There are several custom ROMs available for the Poco X3 Pro that offer a balance of stability and performance. Here are a few options you can consider:
1. Pixel Experience: This ROM is based on the stock Android operating system and offers a clean, fast, and stable experience. It also includes some useful features and customizations.
2. LineageOS: This is another great option that is known for its stability and regular updates. It offers a close-to-stock Android experience with plenty of customization options.
3. Evolution X: This ROM is based on LineageOS but offers even more customization options and features. It's fast, stable, and highly customizable.
4. AOSP Extended: This ROM is based on the Android Open Source Project (AOSP) and offers a clean and simple user interface with a range of customization options. It's known for its stability and fast performance.
5. Resurrection Remix: This ROM offers a highly customizable user interface with plenty of features and options. It's stable, fast, and highly customizable, making it a great choice for power users.
Before flashing any custom ROM, make sure to backup your data and read the installation instructions carefully. Also, keep in mind that installing a custom ROM will void your warranty and could potentially brick your device if not done correctly.