diff --git a/air-mouse.ino b/air-mouse.ino
index 0f6ac3d..c668688 100644
--- a/air-mouse.ino
+++ b/air-mouse.ino
@@ -211,6 +211,9 @@ const unsigned long TELEMETRY_MS         = 1000;
 const unsigned long HEARTBEAT_MS         = 2000;
 const int           HEARTBEAT_DUR        = 30;
 const unsigned long BOOT_SAFE_MS         = 5000;
+#ifdef FEATURE_IMU_STREAM
+  const unsigned long IMU_STREAM_RATE_MS = 50;  // 20 Hz max — 100 Hz overwhelms BLE conn interval
+#endif
 const float BATT_FULL                    = 4.20f;
 const float BATT_EMPTY                   = 3.00f;
 const float BATT_CRITICAL                = 3.10f;
@@ -259,6 +262,9 @@ unsigned long lastBattTime  = 0;
 unsigned long lastHeartbeat = 0;
 unsigned long lastTelemetry = 0;
 unsigned long bootStartMs   = 0;
+#ifdef FEATURE_IMU_STREAM
+  unsigned long lastImuStream = 0;
+#endif
 
 #ifdef FEATURE_TELEMETRY
   uint16_t statRecalCount = 0;
@@ -601,7 +607,7 @@ void setup() {
   Bluefruit.begin(1, 0);
   Bluefruit.setTxPower(4);
   Bluefruit.setName(safeMode ? "IMU Mouse (safe)" : "IMU Mouse");
-  Bluefruit.Periph.setConnInterval(6, 12);
+  Bluefruit.Periph.setConnInterval(12, 24);  // 15-30ms — less aggressive, prevents stream disconnect
 
   Wire1.begin();  // LSM6DS3 is on internal I2C bus (Wire1), must init before imu.begin()
   if (imu.begin() != 0) {
@@ -643,30 +649,14 @@ void setup() {
 
   startAdvertising();
   Serial.print("[OK] Advertising — features:");
-  #ifdef FEATURE_CONFIG_SERVICE
-    Serial.print(" CFG");
-  #endif
-  #ifdef FEATURE_TELEMETRY
-    Serial.print(" TELEM");
-  #endif
-  #ifdef FEATURE_IMU_STREAM
-    Serial.print(" STREAM");
-  #endif
-  #ifdef FEATURE_TAP_DETECTION
-    Serial.print(" TAP");
-  #endif
-  #ifdef FEATURE_TEMP_COMPENSATION
-    Serial.print(" TEMPCOMP");
-  #endif
-  #ifdef FEATURE_AUTO_RECAL
-    Serial.print(" AUTORECAL");
-  #endif
-  #ifdef FEATURE_BATTERY_MONITOR
-    Serial.print(" BATT");
-  #endif
-  #ifdef FEATURE_BOOT_LOOP_DETECT
-    Serial.print(" BOOTDET");
-  #endif
+  #ifdef FEATURE_CONFIG_SERVICE  Serial.print(" CFG");    #endif
+  #ifdef FEATURE_TELEMETRY       Serial.print(" TELEM");  #endif
+  #ifdef FEATURE_IMU_STREAM      Serial.print(" STREAM"); #endif
+  #ifdef FEATURE_TAP_DETECTION   Serial.print(" TAP");    #endif
+  #ifdef FEATURE_TEMP_COMPENSATION Serial.print(" TEMPCOMP"); #endif
+  #ifdef FEATURE_AUTO_RECAL      Serial.print(" AUTORECAL"); #endif
+  #ifdef FEATURE_BATTERY_MONITOR Serial.print(" BATT");   #endif
+  #ifdef FEATURE_BOOT_LOOP_DETECT Serial.print(" BOOTDET"); #endif
   Serial.println();
 
   bootStartMs = millis();
@@ -771,7 +761,9 @@ void loop() {
   }
 
   #ifdef FEATURE_IMU_STREAM
-    if (!safeMode && imuStreamEnabled && Bluefruit.connected()) {
+    if (!safeMode && imuStreamEnabled && Bluefruit.connected()
+        && (now - lastImuStream >= IMU_STREAM_RATE_MS)) {
+      lastImuStream = now;
       ImuPacket pkt;
       pkt.gyroY_mDPS = (int16_t)constrain(gy*(180.f/PI)*1000.f, -32000, 32000);
       pkt.gyroZ_mDPS = (int16_t)constrain(gz*(180.f/PI)*1000.f, -32000, 32000);