I've just installed Epic Game Launcher on the Deck and had an issue where the starting screen was black. I've already find the fix in * this discussion.
Here's the copy of the post
Thanks to
Lopsided_Elephant_24
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1 hr. ago
• Edited 45 min. ago
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I found something that seems to work. In the 3rd party launcher in Steam used for the Epic game launcher, go to Properties->Shortcut->Target, and change the text to:
"{The path to the epic game launcher}/EpicGamesLauncher.exe" -opengl
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From Ayinde6
LET ME KNOW IF IT WORKS FOR YOU