MBP 16" Graphics Performance

[Kuro Tanaka]

When playing a 4k 60fps HDR Youtube movie the machine uses Intel's integrated GPU.

It also uses the integrated Intel GPU when playing an 8k movie, which results in constant freezes during playback.

What do I need to do to get the machine to use the AMD Radeon GPU?

 

[casperes1996]

Turn off automatic GPU switching in System Preferences.

 

[Kuro Tanaka]

With automatic GPU switching turned off the machine is still using the Intel GPU.

This is confirmed by Activity Monitor.

 

[jerryk]

When playing a 4k 60fps HDR Youtube movie the machine uses Intel's integrated GPU.

It also uses the integrated Intel GPU when playing an 8k movie, which results in constant freezes during playback.

What do I need to do to get the machine to use the AMD Radeon GPU?

What 8K movie? If was the Peru from YouTube that movie is messed up.

 

[casperes1996]

With automatic GPU switching turned off the machine is still using the Intel GPU.

This is confirmed by Activity Monitor.

Turning off automatic GPU switching should force use of the dGPU. Please supply screenshots otherwise

 

[Kuro Tanaka]

The video is the 8k Peru video. Closing and reopening Activity Monitor now shows that the Radeon GPU is being used however the video is still freezing and Activity Monitor shows that the utilization of the GPU is often flat even though the video continues to play.

 

[jerryk]

The video is the 8k Peru video. Closing and reopening Activity Monitor now shows that the Radeon GPU is being used however the video is still freezing and Activity Monitor shows that the utilization of the GPU is often flat even though the video continues to play.

View attachment 882442

It is likely the video and Youtube.

There was a whole thread on this earlier with the 16" first came out. Try another 8K video, like the one from Japan.

Also, Youtube has trouble getting you the bytes for the video fast enough if you don't have a very fast connection. Watch them once with it is jerky and they try opening again and see if it is smooth. Again discussed in earlier thread.

 

[Kuro Tanaka]

The LG 8k nature video on YouTube had better performance, averaging between 50 - 60 fps. The issue with the Peru video is most likely related to YouTube and how the video was encoded.

 

[casperes1996]

Most video is hardware accelerated so it doesn't use the computational parts of your hardware, but specific blocks dedicated to just video. This codec in 8k is not hardware accelerated. You may very well be able to run 8k, but probably not in YouTube's VP9 codec. Most people in the comment section can't run it either.
Regarding usage, what's CPU usage like? It may not be made to run on GPU. It may be networking.
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The LG 8k nature video on YouTube had better performance, averaging between 50 - 60 fps. The issue with the Peru video is most likely related to YouTube and how the video was encoded.

I'd find it more likely to be caching on YouTube servers. I'd imagine they transcode everything to the same standard, but yeah. It seems an issue on YT's end looking at other videos is much smoother

 

[iemcj]

When playing a 4k 60fps HDR Youtube movie the machine uses Intel's integrated GPU.

It also uses the integrated Intel GPU when playing an 8k movie, which results in constant freezes during playback.

What do I need to do to get the machine to use the AMD Radeon GPU?

The macbook pro doesn't have a 4k nor hdr screen. Maybe it's lagging trying to compress and scale down the footage into something 8 bit and lower resolution?

 

[Kuro Tanaka]

CPU usage was between 40 - 60% while playing the Peru video.

 

[casperes1996]

The macbook pro doesn't have a 4k nor hdr screen. Maybe it's lagging trying to compress and scale down the footage into something 8 bit and lower resolution?

Pretty sure the panel is 10-bit still, though not HDR n'or 4k.