Help | Downgraded performance with eGPU MacBook Pro (macOS 11, AMD TB3)
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Help | Downgraded performance with eGPU MacBook Pro (macOS 11, AMD TB3)  


New Member
Joined: 5 months ago

Hi guys, need your help. I can't figure out what is the problem and what I did wrong.

The problems is that I always have Downgraded performance and lags while using any App in macOS with chosen eGPU.
It's looks like Mac's dPGU working much faster and works smooth agains my TB3 AMD eGPU.
Even any video shows with lags no matter VLC, QuickTime or YouTube video.
The most interesting fact that all benchmark test goes well and all score are matches the eGPU.
I don't use external display.
In addition some application using eGPU even doesn't show up anything just their window and black screen inside it.
I've tried Windows 10 with boot camp, the same situation there, even tried to change GPU for Windows it was 1080TI and nothing changed.

My System:

macOS 11 Beta 8 (20A5374i)
MacBookPro15,1 (15-inch, 2018)
2.9 GHz 6-Core Intel Core i9
32 GB 2400 MHz DDR4
dGPU Radeon Pro 560X 4 GB
eGPU Sapphire Nitro+ Radeon RX 5700 XT
Sonnet Breakaway 550W

This topic was modified 5 months ago

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