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PC Drivers & Software

blindpanic
Adept III
‎09-08-2019 04:14 PM

High GPU usage during MPEG2 / h.264 video decoding (RX 5700)

I am attempting to watch live TV using a Hauppage tv tuner and am getting terrible performance.  While watching one video stream of MPEG2 at 1080p I'm getting nearly 50% GPU usage and experiencing tons of stuttering with no other applications running.  Really disappointing for a brand new GPU/CPU combo.

RX 5700 reference (19.8.2)

R5 3600

ASUS Prime X570 Pro 1.0.0.3  ABB

I've put up with the BSODs, freezing, lack of hardware acceleration etc. - but when a $350 GPU in 2019 can't decode one 1080p video stream with reasonable efficiency and a consistent frame rate something is seriously wrong. Any help is appreciated.

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2 Replies
marcok
Journeyman III
‎09-23-2019 02:19 PM

Hi,

I have exactly the same problem (and hardware by the way).

Fixen this for now (not sure if it a full solution) for me was to reduce the screen refresh rate from 75HZ to 60HZ.

This caused the GPU usage to drop from 30% to 10% while playing the same YouTube video.

Also see https://community.amd.com/thread/242932 for a lot of other people with 75HZ problems.

Cheers,
Marco

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jokbon
Adept III
‎09-24-2019 09:27 AM

Dear amd: video decoding isusue since 19.7.2 ish. Also to mention its a bit random.
Please help extremely anoying. You can see what i mean here:
https://youtu.be/luhyuBloAeE

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