Using Unreal Engine 4's Editor with a Mac external GPU is very laggy.

Development World Creation
, , , ,
1

Spec 1
Spec 1970×514 128 KB

Spec 2
Spec 21412×746 88.5 KB

I’m currently using a 2019 21.5" iMac, and to boost graphics performance, I’m using a Razer Blade Core X with an AMD Radeon 6800XT attached.Now encountered the following problem：

  1. When using eGP, UE4 Editor will be very laggy and cannot operate normally with a mouse. When using the Internal GPU, everything works fine.

2.Will an external eGPU significantly reduce the graphics performance of the graphics card, making the performance of the external graphics card inferior to the built-in graphics card?

Thanks for your answers!

Screen Recording