diff --git a/lib/ll_queue.h b/lib/ll_queue.h
index 882ce6a..d6037b1 100644
--- a/lib/ll_queue.h
+++ b/lib/ll_queue.h
@@ -336,7 +336,7 @@ int queue_remove_data(struct ll_queue* q, struct ll_entry* entry);
  * @return количество байт
  */
 static inline size_t queue_total_bytes(struct ll_queue* q) {
-    return q ? q->total_bytes : 0;
+    return q->total_bytes;
 }
 
 #endif // LL_QUEUE_H
diff --git a/src/etcp.c b/src/etcp.c
index 0de3791..51b75e6 100644
--- a/src/etcp.c
+++ b/src/etcp.c
@@ -448,7 +448,8 @@ static void input_queue_try_push(struct ETCP_CONN* etcp) {// пробуем пр
     size_t wait_ack_bytes = queue_total_bytes(etcp->input_wait_ack);
     if (wait_ack_bytes <= etcp->optimal_inflight) {
         DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "[%s] resume input queue: inflight_bytes=%d, input_len=%d", etcp->log_name, wait_ack_bytes, etcp->input_queue->total_bytes);
-        queue_resume_callback(etcp->input_queue);// и только когда больше нечего отправлять - забираем новый пакет
+        if (etcp->input_queue->count > 0) input_queue_cb(etcp->input_queue, etcp);
+        else queue_resume_callback(etcp->input_queue);// и только когда больше нечего отправлять - забираем новый пакет
     }
 }
 
diff --git a/tools/etcpmon/etcpmon_gui.c b/tools/etcpmon/etcpmon_gui.c
index ba81a0f..323261f 100644
--- a/tools/etcpmon/etcpmon_gui.c
+++ b/tools/etcpmon/etcpmon_gui.c
@@ -19,7 +19,7 @@
 //#pragma comment(lib, "comctl32.lib")
 //#pragma comment(lib, "user32.lib")
 //#pragma comment(lib, "gdi32.lib")
-#define WINDOW_WIDTH    900
+#define WINDOW_WIDTH    1000
 #define WINDOW_HEIGHT   1250
 #define UPDATE_INTERVAL 10   /* 50ms → 20 samples per second */
 /* Global app pointer for callbacks */
@@ -144,8 +144,8 @@ HWND etcpmon_gui_create_window(struct etcpmon_app* app) {
     }
     
     /* Set default values */
-    SetDlgItemTextA(app->hWndMain, IDC_EDIT_ADDR, "127.0.0.1");
-    SetDlgItemTextA(app->hWndMain, IDC_EDIT_PORT, "9090");
+    SetDlgItemTextA(app->hWndMain, IDC_EDIT_ADDR, "192.168.40.1");
+    SetDlgItemTextA(app->hWndMain, IDC_EDIT_PORT, "9091");
     UpdateUIState(app);
     OnConnect(app);
     
@@ -159,7 +159,7 @@ static void CreateControls(struct etcpmon_app* app) {
     /* Connection group */
     CreateWindowExA(0, "BUTTON", "Connection",
         WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
-        x, y, 880, 60, hWnd, (HMENU)IDC_STATIC, hInst, NULL);
+        x, y, WINDOW_WIDTH - 20, 60, hWnd, (HMENU)IDC_STATIC, hInst, NULL);
     
     /* Address label and edit */
     CreateWindowExA(0, "STATIC", "Server:",
@@ -253,7 +253,7 @@ static void CreateControls(struct etcpmon_app* app) {
     y = 485;
     CreateWindowExA(0, "BUTTON", "ETCP Metrics",
         WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
-        x, y, 430, 210, hWnd, (HMENU)IDC_STATIC, hInst, NULL);
+        x, y, (WINDOW_WIDTH - 40) / 2, 210, hWnd, (HMENU)IDC_STATIC, hInst, NULL);
     
     int mx = x + 10, my = y + 20;
     
@@ -323,10 +323,11 @@ static void CreateControls(struct etcpmon_app* app) {
         mx + 85, my, 100, 20, hWnd, (HMENU)IDC_EDIT_ETCP_LINKS, hInst, NULL);
     
     /* TUN/Routing Metrics group - right of ETCP Metrics */
-    x = 460; y = 485;
+    int group_w = (WINDOW_WIDTH - 40) / 2;
+    x = 10 + group_w + 20; y = 485;
     CreateWindowExA(0, "BUTTON", "TUN/Routing Metrics",
         WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
-        x, y, 430, 210, hWnd, (HMENU)IDC_STATIC, hInst, NULL);
+        x, y, group_w, 210, hWnd, (HMENU)IDC_STATIC, hInst, NULL);
     
     mx = x + 10; my = y + 20;
     
@@ -441,13 +442,13 @@ static void CreateControls(struct etcpmon_app* app) {
     
     app->hListLinks = CreateWindowExA(WS_EX_CLIENTEDGE, "LISTBOX", "",
         WS_CHILD | WS_VISIBLE | LBS_NOTIFY | WS_VSCROLL | LBS_NOINTEGRALHEIGHT,
-        10, y + 20, 880, 160, hWnd, (HMENU)IDC_LIST_LINKS, hInst, NULL);
+        10, y + 20, WINDOW_WIDTH - 20, 160, hWnd, (HMENU)IDC_LIST_LINKS, hInst, NULL);
     
     /* Queues & Errors group - below Links */
     y = 915;
     CreateWindowExA(0, "BUTTON", "Queues & Errors",
         WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
-        10, y, 880, 335, hWnd, (HMENU)IDC_STATIC_QUEUES, hInst, NULL);
+        10, y, WINDOW_WIDTH - 20, 335, hWnd, (HMENU)IDC_STATIC_QUEUES, hInst, NULL);
     
     int qy = y + 22;
     int q_col1 = 20;
@@ -481,6 +482,9 @@ static void CreateControls(struct etcpmon_app* app) {
     app->hEditQWaitAckPkts = CreateWindowExA(WS_EX_CLIENTEDGE, "EDIT", "",
         WS_CHILD | WS_VISIBLE | ES_READONLY | ES_CENTER,
         q_col3 + 135, qy - 2, 50, 18, hWnd, (HMENU)IDC_EDIT_Q_WAIT_ACK_PKTS, hInst, NULL);
+    app->hEditQWaitAckOptInfl = CreateWindowExA(WS_EX_CLIENTEDGE, "EDIT", "",
+        WS_CHILD | WS_VISIBLE | ES_READONLY | ES_CENTER,
+        q_col3 + 190, qy - 2, 60, 18, hWnd, (HMENU)IDC_EDIT_WAITACK_OPT_INFL, hInst, NULL);
     
     /* Queue metrics - row 2 */
     qy += 28;
@@ -548,9 +552,6 @@ static void CreateControls(struct etcpmon_app* app) {
     app->hEditWaitAckTimer = CreateWindowExA(WS_EX_CLIENTEDGE, "EDIT", "",
         WS_CHILD | WS_VISIBLE | ES_READONLY | ES_CENTER,
         q_col1 + 195, qy - 2, 60, 18, hWnd, (HMENU)IDC_EDIT_WAITACK_TIMER, hInst, NULL);
-    app->hEditWaitAckOptInfl = CreateWindowExA(WS_EX_CLIENTEDGE, "EDIT", "",
-        WS_CHILD | WS_VISIBLE | ES_READONLY | ES_CENTER,
-        q_col1 + 260, qy - 2, 60, 18, hWnd, (HMENU)IDC_EDIT_WAITACK_OPT_INFL, hInst, NULL);
     
     /* ID metrics - row 4 */
 //    qy += 30;
@@ -984,6 +985,7 @@ void etcpmon_gui_update_metrics(struct etcpmon_app* app,
     UpdateEditIfChanged(hMain, IDC_EDIT_Q_IN_SEND_PKTS,  "%u", metrics->etcp.input_send_q_packets);
     UpdateEditIfChanged(hMain, IDC_EDIT_Q_WAIT_ACK_BYTES, "%u", metrics->etcp.input_wait_ack_bytes);
     UpdateEditIfChanged(hMain, IDC_EDIT_Q_WAIT_ACK_PKTS, "%u", metrics->etcp.input_wait_ack_packets);
+    UpdateEditIfChanged(hMain, IDC_EDIT_WAITACK_OPT_INFL, "%u", metrics->etcp.optimal_inflight);
     UpdateEditIfChanged(hMain, IDC_EDIT_Q_ACK_BYTES,     "%u", metrics->etcp.ack_q_bytes);
     UpdateEditIfChanged(hMain, IDC_EDIT_Q_ACK_PKTS,      "%u", metrics->etcp.ack_q_packets);
     UpdateEditIfChanged(hMain, IDC_EDIT_Q_RECV_BYTES,    "%u", metrics->etcp.recv_q_bytes);
@@ -1004,7 +1006,6 @@ void etcpmon_gui_update_metrics(struct etcpmon_app* app,
     UpdateEditIfChanged(hMain, IDC_EDIT_WAITACK_SUSP, "%s", metrics->etcp.wait_ack_cb_suspended ? "ON" : "OFF");
     UpdateEditIfChanged(hMain, IDC_EDIT_WAITACK_CB,   "%s", metrics->etcp.wait_ack_cb_set ? "ON" : "OFF");
     UpdateEditIfChanged(hMain, IDC_EDIT_WAITACK_TIMER, "%s", metrics->etcp.wait_ack_resume_timeout ? "ON" : "OFF");
-    UpdateEditIfChanged(hMain, IDC_EDIT_WAITACK_OPT_INFL, "%u", metrics->etcp.optimal_inflight);
     
     /* ID Metrics */
     UpdateEditIfChanged(hMain, IDC_EDIT_ID_NEXT_TX,    "%u", metrics->etcp.next_tx_id);
@@ -1125,6 +1126,7 @@ void etcpmon_gui_clear_metrics(struct etcpmon_app* app) {
     SetDlgItemTextA(app->hWndMain, IDC_EDIT_Q_IN_SEND_PKTS, "");
     SetDlgItemTextA(app->hWndMain, IDC_EDIT_Q_WAIT_ACK_BYTES, "");
     SetDlgItemTextA(app->hWndMain, IDC_EDIT_Q_WAIT_ACK_PKTS, "");
+    SetDlgItemTextA(app->hWndMain, IDC_EDIT_WAITACK_OPT_INFL, "");
     SetDlgItemTextA(app->hWndMain, IDC_EDIT_Q_ACK_BYTES, "");
     SetDlgItemTextA(app->hWndMain, IDC_EDIT_Q_ACK_PKTS, "");
     SetDlgItemTextA(app->hWndMain, IDC_EDIT_Q_RECV_BYTES, "");
diff --git a/tools/etcpmon/etcpmon_gui.h b/tools/etcpmon/etcpmon_gui.h
index d74b9d8..cc2d810 100644
--- a/tools/etcpmon/etcpmon_gui.h
+++ b/tools/etcpmon/etcpmon_gui.h
@@ -231,6 +231,7 @@ struct etcpmon_app {
     HWND hEditQInSendPkts;
     HWND hEditQWaitAckBytes;
     HWND hEditQWaitAckPkts;
+    HWND hEditQWaitAckOptInfl;
     HWND hEditQAckBytes;
     HWND hEditQAckPkts;
     HWND hEditQRecvBytes;
@@ -251,7 +252,6 @@ struct etcpmon_app {
     HWND hEditWaitAckSuspend;
     HWND hEditWaitAckCb;
     HWND hEditWaitAckTimer;
-    HWND hEditWaitAckOptInfl;
     
     /* ID metrics */
     HWND hEditIdNextTx;