More RPCS3 performance on NVIDIA GPUs!Yahfz found a workaround for an @NVIDIA driver bug that was bottlenecking performance.In this boat test scenario:13900K + RTX 3080: +20% FPS9800X3D + RTX 5090: +25% FPSAMD GPU drivers do not have this bug, thus seeing no change. pic.twitter.com/BRad9Ayesf September 16, 2026
We don’t know the exact nature of the Nvidia driver bug here, but the RPCS3 devs say that it bottlenecks the performance of their PS3 emulator. The first example cited provides two PC configurations running Red Dead Redemption in a scene featuring a paddle steamer. This is a popular ‘ benchmarking ’ scene focused on the Blackwater docks in the game, featuring relatively consistent camera paths and water effects.
Those are very gratifying performance uplifts resulting from a driver bug workaround. Plenty of readers are probably more interested if the purported bug might also be bottlenecking native PC gaming performance . If it were, that would be a hugely significant find/workaround from the RPCS3 team, specifically ‘Yahfz.’ Please note that “ AMD GPU drivers do not have this bug, thus seeing no change,” say the emulator developers.
Follow-up social media postings underline that RDR isn’t an outlier, and “most games are impacted” by the bottleneck in the Nvidia driver . Great frame rate improvements can also be seen when using lower-end GPUs, too. The open sourcerers tested Gran Turismo 5 and saw frame rates climb by an incredible 37%, while VRAM usage dropped from 7.1 to 4.8GB. Meanwhile, playing Saints Row IV on a more mainstream GTX 1060 saw a 20% improvement in performance.
Sadly, RPCS3 dev reach-outs to Nvidia are falling on deaf ears. Another follow-up tweet states that “We tried using the developer forums in the past to no avail and gave up.” It then asks @Nvidia to establish a direct communication channel to receive driver bug reports. Nvidia Software QA boss Manuel Guzman has now replied directly , so we will see what happens in due course.
RPCS3 emulator devs slam Nvidia DLSS 5 as 'AI-slop generator'
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Reference reading
- https://www.tomshardware.com/pc-components/gpu-drivers/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/gpu-drivers/playstation-3-emulation-devs-work-around-an-nvidia-bug-for-up-to-37-percent-faster-performance-open-source-coders-reach-out-to-nvidia-to-over-uncovered-bug#main
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