diff --git a/README.md b/README.md
index 8dddc58..230678d 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,8 @@ or
 WGPU_BACKEND=gl cargo run
 ```
 
+However, this may result in poor performance and visual glitches.
+
 # Building
 ## On Linux