To enable or disable the PhysX visual indicator:

1. Open the NVIDIA Control Panel
2. Select any of the items in the "3D Settings" tree. ('Adjust image settings with preview,' 'Manage 3D Settings,' 'Configure SLI, Surround, PhysX')
3. At the top of the Control Panel you'll see a drop-down menu labeled "3D Settings" which will have the option for the PhysX indicators. Click this to hide them.

PhysX is an open-source realtime physics engine middleware SDK developed by Nvidia as a part of Nvidia GameWorks software suite.

Video games supporting PhysX can be accelerated by either a PhysX PPU (expansion card designed by Ageia) or a CUDA-enabled GeForce GPU thus offloading physics calculations from the CPU, allowing it to perform other tasks instead.

PhysX and other middleware physics engines are used in a large majority of today's video games because they free game developers from having to write their own code that implements classical mechanics (Newtonian physics) to do, for example, soft body dynamics.

What is known today as PhysX originated as a physics simulation engine called NovodeX. The engine was developed by Swiss company NovodeX AG, an ETH Zurich spin-off[3]. In 2004, Ageia acquired NovodeX AG and began developing a hardware technology that could accelerate physics calculations, aiding the CPU. Ageia called the technology PhysX PPU, and the SDK was renamed from NovodeX to PhysX.

The first game to use PhysX was Bet On Soldier: Blood Sport.[citation needed]

In 2008, Ageia was itself acquired by graphics technology manufacturer Nvidia.[5] Nvidia started enabling PhysX hardware acceleration on its line of GeForce graphics cards[6] and eventually dropped support for Ageia PPUs.

PhysX SDK 3.0 was released in May 2011 and represented a significant rewrite of the SDK, bringing improvements such as more efficient multithreading and a unified code base for all supported platforms.

At GDC 2015, Nvidia made the source code for PhysX available on GitHub, but required registration at developer.nvidia.com.[8] The proprietary SDK was provided to developers for free for both commercial and non-commercial use on Windows, Linux, macOS, iOS and Android platforms.

On December 3, 2018, PhysX was made open source under a 3-clause BSD license, but this change applied only to Windows, Linux, MacOS X, Android ARM and iOS.

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