diff --git a/examples/Glediator3_TPM2_MatrixPanel/README.md b/examples/Glediator3_TPM2_MatrixPanel/README.md
index 6aafd53..5caa4c5 100644
--- a/examples/Glediator3_TPM2_MatrixPanel/README.md
+++ b/examples/Glediator3_TPM2_MatrixPanel/README.md
@@ -1,7 +1,7 @@
 # Glediator3_TPM2_MatrixPanel
 An example of controlling an LED Matrix panel using desktop software via. the serial TPM2 protocol.
 
-This is very experimental and might not work.
+This is very experimental and might not work. Please note the frame rate on a 64x32 panel will be low (about 12fps) due to the limitation of how the Serial port throughput!
 
 # How to use
 * Install the TPM2 library: https://github.com/rstephan/TPM2