Nvidia about to release an ongoing driver fix DPC latency problem. Manuel Guzman, Nvidia’s software quality assurance spokesman, said in a Twitter post that a fix is in the works.However, the release of the update still required Pass standard QA tests pre-distribution procedures.
Nvidia has gone to great lengths to minimize input lag and improve responsiveness with projects such as Nvidia Reflex, but users of its drivers have experienced DPC lag issues across several generations of GPUs. I have been annoyed.
For those unfamiliar with DPC latency, it’s a system latency introduced by Windows’ Deferred Procedure Call (DPC). DPC is designed to defer higher priority tasks when they are needed but lower priority tasks to run later. However, when the DPC buffer fills up, you may experience stutters, skips, and similar glitches in video and audio. Such annoying lag symptoms are highly undesirable when playing games, watching videos, and creating or listening to music.
Anyone who thinks they have DPC latency issues can download various tools to check and minimize the problem. However, a proper fix would require a device driver coded to minimize excessive delays on the DPC. If you have a laptop or off-the-shelf PC, note check Maintain a list of systems and their tested DPC latencies. A lower number is better.
According to Guzman, Nvidia has reached the stage of fixing the DPC latency issue in its drivers. Of course, proof of pudding is eating, and you’ll soon find out when your fixed driver arrives. As the Nvidia Software QA spokesperson put it, “Please be patient.”
Updating GPU monitoring apps and Nvidia drivers
Guzman’s Twitter thread, where the news about the DPC delay broke, made the following solid recommendations: Quit all GPU monitoring apps Before updating the Nvidia drivers. The crux of this potential problem is that if you forget or ignore this advice, “the GPU monitor utility may incorrectly set a lower power target, resulting in poor performance.”
Nvidia gamers using Windows 11
Guzman too It is recommended Windows 11 users with Nvidia GPUs should update to the latest version. Apparently, Microsoft’s latest update addresses a timeout detection and recovery (TDR) error that can interrupt your game session.