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That's because those games defaulted to using the CPU as the PhysX processor. For context, PhysX is a proprietary technology that uses parallel processing to calculate complex physics. CPUs don't ...

Despite that modern CPUs with powerful SIMD extensions can easily handle these sorts of physical simulations, NVIDIA's CPU-based implementation of its PhysX libraries is extremely unoptimized ...

With this change, RTX 50 series GPU owners will now be forced to run older PhysX titles using CPU-based PhysX. For context, PhysX is one of Nvidia’s older graphics technologies. It is a proprietary ...

Nvidia's 32-bit PhysX support isn't present on RTX 5000 series GPUs This will effect a number of older titles that utilize the physics API for enhanced visuals and particle effects It adds to the ...

The CPU-Z application reported the Zotac GeForce ... When a user reported that PhysX wasn't working on the RTX 50 series at Nvidia forums, it prompted a response from Nvidia staff.

It's worth noting that, if you want to run these games and get a better average fps on an RTX 5090, you can opt to turn off PhysX entirely ... the RTX 3080 Ti with CPU-enabled PhysX in Mirror's ...

They added that without legacy support, the rendering that used to be run by PhysX is now taken up by aspects of the CPU, which does not function as well. While they would have expected CPU ...

Nvidia’s GeForce RTX 5090, 5080, and 5070 Ti are some of the most in-demand GPUs today, but if you think they’ll help you play your Steam account’s back catalog at blistering FPS, you may be ...

PhysX was not enabled, or was running on the CPU regardless of the selection in the NVIDIA Control Panel. It turned out that this may be intentional, as a member of the NVIDIA forum linked to a page ...

PhysX, the game-specific graphics technology that was highly promoted from the 2000s to the early 2010s, is no longer supported by NVIDIA's RTX 50 series. PhysX is a proprietary physics simulation ...

And as you can see in the video just above, PhysX just doesn’t run terribly well without a GPU’s assistance, tanking performance when its effects are most vividly felt on screen. One Redditor ...