diff --git a/docs/pi_zero_2_w_Config.md b/docs/pi_zero_2_w_Config.md
index b81ebe4..d1cee7e 100644
--- a/docs/pi_zero_2_w_Config.md
+++ b/docs/pi_zero_2_w_Config.md
@@ -28,3 +28,15 @@ temp_soft_limit=85
 arm_freq=1200
 over_voltage=6
 ```
+
+#### Tunning, disable vc cma and video code
+
+Add **/etc/modprobe.d/blacklist.conf**
+
+```
+blacklist bcm2835_codec
+blacklist bcm2835_v4l2
+blacklist bcm2835_isp
+blacklist bcm2835_mmal_vchiq
+blacklist vc_sm_cma
+```