Use DEBUG_TIMING_ACCURACY debug[4] to record 10ths % late tasks

src/main/scheduler/scheduler.c

@@ -69,6 +69,7 @@
 // 1 - Tasks late in last second
 // 2 - Total lateness in last second in 10ths us
 // 3 - Total tasks run in last second
+// 4 - 10ths % of tasks late in last second
 
 extern task_t tasks[];
 
@@ -546,6 +547,9 @@ FAST_CODE void scheduler(void)
                 DEBUG_SET(DEBUG_TIMING_ACCURACY, 3, taskCount);
 
                 lateTaskPercentage = 1000 * (uint32_t)lateTaskCount / taskCount;
+                // 10ths % of tasks late in last second
+                DEBUG_SET(DEBUG_TIMING_ACCURACY, 4, lateTaskPercentage);
+
                 lateTaskCount = 0;
                 lateTaskTotal = 0;
                 taskCount = 0;