diff --git a/platformio.ini b/platformio.ini
index bd2e8fa37..f6c0f3867 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -56,6 +56,7 @@ build_flags = -Wno-missing-field-initializers
 	#-DBUILD_EPOCH=$UNIX_TIME ; set in platformio-custom.py now
 	#-D OLED_PL=1
 	#-D DEBUG_HEAP=1 ; uncomment to add free heap space / memory leak debugging logs
+	#-D DEBUG_LOOP_TIMING=1 ; uncomment to add main loop timing logs
 
 monitor_speed = 115200
 monitor_filters = direct
diff --git a/src/concurrency/OSThread.cpp b/src/concurrency/OSThread.cpp
index 5aee03bbf..ce9a256b7 100644
--- a/src/concurrency/OSThread.cpp
+++ b/src/concurrency/OSThread.cpp
@@ -90,7 +90,9 @@ void OSThread::run()
     if (heap < newHeap)
         LOG_HEAP("++++++ Thread %s freed heap %d -> %d (%d) ++++++", ThreadName.c_str(), heap, newHeap, newHeap - heap);
 #endif
-
+#ifdef DEBUG_LOOP_TIMING
+    LOG_DEBUG("====== Thread next run in: %d", newDelay);
+#endif
     runned();
 
     if (newDelay >= 0)
diff --git a/src/main.cpp b/src/main.cpp
index 5a1b361b3..635664eb7 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1607,6 +1607,9 @@ void loop()
 
     // We want to sleep as long as possible here - because it saves power
     if (!runASAP && loopCanSleep()) {
+#ifdef DEBUG_LOOP_TIMING
+        LOG_DEBUG("main loop delay: %d", delayMsec);
+#endif
         mainDelay.delay(delayMsec);
     }
 }