diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -59,7 +59,9 @@ will launch the application in the correct environment. See https://github.com/V
 
 ## UNREAL ENGINE
 
-Unreal Engine 4.16+ has support for SteamVR on Linux.
+Unreal Engine 4.16+ has support for SteamVR on Linux, using the OpenGL RHI (GL4 SM5)
+
+Starting with Unreal Engine 4.19, we recommend using the Vulkan RHI for VR, which requires a patch to the engine. See https://github.com/EpicGames/UnrealEngine/pull/4730 for details.
 
 ## UNITY DEVELOPMENT