Problem with play in full screen on internal display
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Problem with play in full screen on internal display  


New Member
Joined: 5 years ago


I have problem with play games in fullscreen on internal display. When I start game in window mode and switch from fake monitor to my internal desktop every thing is ok. But when I try switch to full screen or full screen windowed mode my game going back to fake display. 

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


Eminent Member
Joined: 5 years ago

Did you find a solution to this issue? @thallium

iMac Retina 4K, 21", Late 2015, Mojave, iGPU 6200
MBP Retina, 13", Early 2015, Mojave, iGPU 6100
Aorus Gaming Box GTX1080

Trusted Member
Joined: 6 years ago

I am pretty sure that the behavior described here is normal, unfortunately…

The so-called window-drag or fake-display method does allow you to play games in windowed mode on the internal screen but not in fullscreen mode.

There is a trick which consists of simulating fullscreen by using borderless windowed mode, but you may have to count with some performance hit doing so. The window-drag method was a lot used 2-3 years ago when eGPU-solutions for gaming on the internal screen of laptops with dGPUs were almost inexistant. Today, there are different solutions which are simply better (for laptops). Now, I don't know about iMacs...

I tested the window-drag method during my journey in this eGPU world some months ago. I share my experience in the thread below if you want some additional piece of information.

Impact of Turboboost on performances and fan noise level (MacBook Pro)

2014 15" MacBook Pro (GT750M) [4th,4C,H] + GTX 1060 @ 16Gbps-TB2 (AKiTiO Thunder2) + Win10 [build link]