MIUI 12.5.5 aggressive battery saver. Go to → Find Google Play Services → Set to No restrictions .
Instead of a Google Installer, use (based on China ROM but with GMS fully integrated) or flash the official Global ROM via Mi Flash Tool. This is safer and more stable for Android 10 + MIUI 12.5.5. Google Installer For Miui 12.5.5 Android 10 -HOT
: You may need to manually confirm the installation for each of the six core Google components as they download. Finalize & Sync MIUI 12