diff --git a/radio/src/mixer_scheduler.h b/radio/src/mixer_scheduler.h
index ccded9a5e..601f3fcd7 100644
--- a/radio/src/mixer_scheduler.h
+++ b/radio/src/mixer_scheduler.h
@@ -23,7 +23,7 @@
 
 #define MIXER_SCHEDULER_DEFAULT_PERIOD_US 4000u // 4ms
 
-#define MIN_REFRESH_RATE      4000 /* us */
+#define MIN_REFRESH_RATE      1750 /* us */
 #define MAX_REFRESH_RATE     25000 /* us */
 
 #if !defined(SIMU)