NVIDIA releases GeForce 617.70 hotfix driver to fix G-SYNC Pulsar 320 FPS bug and black flashes
NVIDIA has released the GeForce 617.70 hotfix driver to address two specific issues affecting high-refresh-rate gaming monitors. The update targets a bug that limits frame rates to approximately 320 FPS on G-SYNC Pulsar displays and resolves occasional black flashes occurring on 360Hz QHD monitors.
Fixing performance caps and visual glitches
One of the primary fixes addresses a bug impacting 360Hz G-SYNC Pulsar monitors, where frame rates were being capped at around 320 FPS. Users reported that this limitation was accompanied by increased input latency. NVIDIA had previously acknowledged the issue and confirmed it was being investigated.
The second fix targets issue 4846825, involving occasional black flashes during gameplay on QHD monitors running at 360 Hz. These glitches, which primarily affected GeForce RTX 30 and RTX 40 series GPUs, caused the display to briefly lose its image while the game continued to run in the background.
Hotfix limitations and workarounds
It is important to note that driver 617.70 is an optional hotfix based on the 617.42 WHQL branch. It is intended specifically for users experiencing the mentioned bugs. Regular users are advised to stick to the stable WHQL releases provided via the NVIDIA App.
However, NVIDIA warns that the black-screen issue is not entirely resolved. The company is still investigating remaining cases and suggests a temporary workaround: set the Power Management Mode to «Prefer Maximum Performance» in the NVIDIA Control Panel. A system restart is required after applying this change.
Additionally, the issue where G-SYNC and Pulsar become unavailable after a monitor enters sleep mode remains unresolved. While NVIDIA has successfully reproduced the problem internally, a specific release date for a permanent fix has not yet been provided.
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