It does require a PC after installation.
Many games look significantly sharper (especially on Quest 3). Quest Games Optimizer Download Free
For the price of a sandwich, QGO transforms your Quest 2/3/3S into a significantly better headset. If you can afford a VR headset, support the developer and get the real thing. It does require a PC after installation
QGO works by allowing users to bypass Meta's conservative power-saving settings to achieve better visuals or smoother performance. Quest Games Optimizer Quest Games Optimizer Download Free
You cannot sideload QGO without developer mode.