Hardware Acceleration Isssue

[zsolt_93]

Bought a new laptop last week. I7 6700HQ+HD530+GTX960M is the main config. I cannot play 4k youtube or 1080p twitch streams consistently at the 60fps framerate the video is streamed in, i only get around 42-50 using hardwre acceleration. If i force the dedicated card the situation is pretty similar than if i let it use the integrated. The browser in question is Chrome. IE and Edge seem ette but they are not a choice for long term because of obvious issues. Turning off hardware accelerated playback i get 60fps but the cpu is fully loaded and cannot do anything else (with acceleration on CPU usage still seems high at 50-60%).

Ideas for what might be the issue? Running latest stable Intel/nVidia driver. Tested my old laptop can do the same without a hitch and its a 2nd Gen intel CPU with HD3000.

 

[GoldenX]

Power saving? I'm wild guessing.

 

[zsolt_93]

Nope, all set to max power, that was my first guess, i am on mains power and tried the nVidia GPU too and have the same probs. CPU is running at 2.6 at least when this happens. Like its not working at all and is falling back to software rendering but it still uses up the gpu resources too. And purely software rendering produces a lot better results. or IE and Edge for that matter. Just tried out 64bit chrome, its the same as the 32bit. The thing is that it happens both for flash and HTML5 videos. Youtube is HTML5 and VP9 codec, while Twitch is flash based.
I also noticed that when going fullscreen (or theatre mode) there is a huge drop in FPS, even if the video resolution itself stays the same 720p or 1080p. And i cannot afford a reinstall right now (windows is like 4 days old), to elliminate every other cause.


Anyone with a Skylake chip and integrated GFX could test this? That would confirm to me that it lies in the intel driver. SandyBridge + Fermi works good, Haswell+Fermi works good, these were the other pc configs i could test on

 

[GoldenX]

Possibly some filter eating resources, it seems to be something between the video/browser and the driver, and it should not be codecs because Edge uses it's owns.