The good news is that modern Android versions (8.0 - 14) have opened small loopholes. While you cannot permanently lock all cores at 100% without root, you can force your device to utilize on all cores temporarily using legitimate, non-root methods.
: A specialized utility that can be used to lock clock speeds and select specific FPS targets via a notification panel toggle. Script-Based Performance Boosts download max all cpu core no root
Download Activity Launcher from the Play Store, search for "Power" or "Performance," and look for hidden toggles that enable "High Performance Mode," which keeps cores active longer. Step-by-Step Guide: Forcing Max Performance The good news is that modern Android versions (8