macOS eGPU users, are you experiencing this performance issue?
 
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macOS eGPU users, are you experiencing this performance issue?  

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Chippy McChipset
(@chippy-mcchipset)
Reputable Member
Joined: 3 years ago
 

It would be good if everyone testing posts their OS version so we can clearly notice any patterns that might be related to same. Hopefully 10.13.6 fixes it like detunedradios mentioned but always good to have data points with eGPU stuff. Some questions I have about this behavior for "radios":

1. Before you started this test did you set the external display to be the main OS display in Preferences?
2. What happens (in earlier OS versions) if you try this test with Vimeo instead of YouTube (in Safari)?
3. What happens if you open a QuickTime video in the finder instead of watching through Safari?

FWIW I definitely have not seen anything like this when working with video through editing applications, but that doesn't mean much as Safari may use a different set of system resources to playback video. Something about those resources may be the problem, like a process that stays open in the background until you disconnect the eGPU.

Bring peace to your computing life: stop trying to understand Apple.


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detunedradios
(@detunedradios)
Trusted Member
Joined: 3 years ago
 

I actually filed a Radar with Apple who contacted me to help make sure this is resolved. I found three reproducible causes of the issue:

1) Playing YouTube videos in Safari on an eGPU-connected external display.
2) Changing scaled resolutions on the external display while watching HTML5 video of any kind in Safari.
3) Playing Life is Strange.

All three are fixed as of the latest 10.13.6 beta. I couldn't tell you anything else about the issue other than that because I'm on 10.13.6 at the moment and have no intention of downgrading, haha.

2016 15" MacBook Pro - 2.7GHz Core i7, Radeon Pro 460 4GB, 1TB SSD
Sonnet Breakaway Box 350, modded with 650W PSU, with Radeon RX Vega 64


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Chippy McChipset
(@chippy-mcchipset)
Reputable Member
Joined: 3 years ago
 
Posted by: detunedradios

I actually filed a Radar with Apple who contacted me to help make this is resolved. I found three reproducible causes of the issue:

1) Playing YouTube videos in Safari on an eGPU-connected external display.
2) Changing scaled resolutions on the external display while watching HTML5 video of any kind in Safari.
3) Playing Life is Strange.

All three are fixed as of the latest 10.13.6 beta. I couldn't tell you anything else about the issue other than that because I'm on 10.13.6 at the moment and have no intention of downgrading, haha.

I don't blame you. ; ) Whatever it was looks like Apple found and fixed it.

Bring peace to your computing life: stop trying to understand Apple.


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steve500
(@steve500)
Eminent Member
Joined: 2 years ago
 

Waking up an old thread, sorry guys.

Using a 2018 13" 4 core i7 MacBook pro and Aorus gaming box with Vega 56

Here in Mojave 10.14.1, 4k60 video playback performance on YouTube in chrome is quite terrible. 4k60 video files of high bitrate veriaty playing in QuickTime also results in a severely slowed system and occasional dropped frames. eGPU usage jumps to a rock solid 100%. 

Dirt Rally for Mac in Steam with high settings in 4k plays beautifully. Rebooting to window, 4k60 plays beautifully in chrome. The same high bitrate 4k60 files played fine in windows video player and vlc. eGPU utilization doesn't budge past 50-60% when playing back 4k60 fps content in full screen. 

I confirmed this same behavior on a 2016 MacBook pro also running 10.14.1 with the same eGPU and also a Akitio Node Pro with Vega 56. The same MacBook pro ran these tests great in windows.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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