For most advanced features—yes, root access is required. GLTools needs to modify system graphics drivers to function effectively. However, newer versions of related apps offer and virtual space mode that can work on non-rooted devices. That said, the best performance and stability come from a fully rooted device.
If you are technically savvy, have a rooted device, and primarily play offline or single-player games where bans are not a concern, GLTools can revolutionize your gaming. If you value safety and simplicity, the best advice is to stick with official alternatives and in-game settings. gltools premium apk