I'm troubleshooting a strange playback issue on a Dell Precision 5550 running Windows 11. Downloaded 4K videos play smoothly, but YouTube videos drop frames and videos in Telegram Desktop stutter. Scrolling on some websites also feels unusually sluggish, even though the same sites and videos work normally on another computer.
The laptop has Intel UHD integrated graphics and an NVIDIA Quadro T1000. Dell and NVIDIA drivers are up to date, there are no device errors, and hardware acceleration is enabled in Edge. Edge reports hardware-accelerated decoding, but it appears to render through the Intel GPU instead of the Quadro. During 4K YouTube playback, CPU usage is around 40–50%, Intel GPU usage stays below about 30%, and the Quadro is mostly idle.
Could this be related to the Intel graphics driver, Windows' compositor, hardware acceleration, video overlays, MPO, GPU scheduling, or the way browser-based apps choose a GPU? What should I check next?
3 Answers
Try disabling hardware acceleration inside Telegram and, if necessary, in the browser as a diagnostic step. It sounds backwards, but a buggy Intel driver, overlay path, or compositor can make accelerated playback worse. If disabling it fixes the stutter, you’ve narrowed the cause to the graphics acceleration pipeline rather than raw system performance.
Browsers and apps built on WebView or Electron may choose the integrated GPU even when a discrete GPU is available. In NVIDIA’s graphics settings, try assigning Edge to the Quadro and test again. This could explain why a local player is smooth while browser video and Telegram are not, since dedicated media players often handle GPU selection more intelligently.
Check YouTube’s “Stats for nerds” and look at the codec being used. If it’s AV1, temporarily forcing H.264 or VP9 can help determine whether AV1 decoding is the source of the dropped frames. Firefox may also behave differently because it uses a separate rendering and decoding path.
I tried that approach in Firefox, and playback was smooth there, but the issue remains in the other applications. That suggests the problem may be specific to the browser or app rendering path rather than the video files themselves.
That makes sense, especially since Telegram shows the same behavior while local 4K playback is flawless. I’m going to force Edge onto the Quadro first and compare the results.