diff --git a/Performance-Tips.md b/Performance-Tips.md
index f139ff8..0afaffe 100644
--- a/Performance-Tips.md
+++ b/Performance-Tips.md
@@ -9,6 +9,7 @@ One drawing function like `DrawImage` or `Fill` is usually treated as one (inter
 * All the render sources are same (`B` in `A.DrawImage(B, op)`)
 * All the color matrices are same
 * All the composite modes are same
+* All the filter values are same
 
 examples/sprites is a good example to draw > 10000 sprites with one draw command.