I need help too for that !

I had the same issue go if on windows 10 go to setting/system/display then under display open the graphics settings click browse. To get to forces of couruption it is by default under thispc/winows(c)/programfiles(x86)/steam/steamapps/common/starwarsempireatwar/corouption and select the star wars g icon and hit add. It should now appear in setting where you have to click on it press options and select high preformance. Hope this helps

I've found an solution :
Go to the NVIDIA Control Panel by right clicking on your desk top and clicking on "NVIDIA Control Panel".

In the default screen that pops up (it should be "manage 3D settings", and the "Program Settings" tab should be automatically selected), under "1. Select a program to customize:" hit the "Add" button.

From here, navigate to the folder where your steam games are located. For me, it is C:\Program Files (x86)\Steam\steamapps\common.

Select the folder for the game you want to use your NVIDIA card for, and find the .exe for that game (it's usually right in the main game folder). Select it and hit open.

Then, under "2. Select the preferred graphics processor for this program:" open the drop-down menu and select "High-performance NVIDIA processor".

Finally, hit apply in the far bottom right corner, and you should be good to go!

does anyone know how to do this with radeon rx vega m gl?

maybe it just specifies the wrong graphics card. for me it lists my integrated gpu but, nvidia container shows that it is running on my dedicated gpu. maybe the same thing is happening to you.

Can you make a video on Youtube for this and paste it here please? Because that last step "open the drop-down menu and select "High-performance NVIDIA processor"" isn't here in my Nvida control panel in manage 3D settings.

that suggests that you do not have nvidia optimus running. nvidia container can still be activated either way. in nvidia control panel, click on the desktop menu and then activate the show activity icon option at the bottom. then run the game and click on nvidia container to find out if the game is running on the nvidia gpu.