diff --git a/inference/gradio_composite_demo/README.md b/inference/gradio_composite_demo/README.md
index 5743cf1..6e6c5e4 100644
--- a/inference/gradio_composite_demo/README.md
+++ b/inference/gradio_composite_demo/README.md
@@ -42,4 +42,9 @@ pip install -r requirements.txt
 
 ```bash
 python gradio_web_demo.py
-```
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+```
+
+
+### known issue
+
+The known issue is that RIFE may experience precision overflow on different devices, resulting in incorrect image colors. 
\ No newline at end of file