diff --git a/README.md b/README.md
index 21965a4..ff1e491 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ During boot hold:
 **ALL OTHER SETTINGS SHOULD BE REMARKED!**
 
 From v1.16 you **need to** update your ESP32 boards in board manager to v2.x
-
+In case you experience QRM from the screen on 90MHz, try to lower the SPI_FREQUENCY parameter.
 
 ### Connecting analog signal meter
 ```