diff --git a/tests/Makefile.am b/tests/Makefile.am
index ae354509..7f2ad4fe 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -695,9 +695,10 @@ test_etcp_link_stress_SOURCES = test_etcp_link_stress.c
 test_etcp_link_stress_CFLAGS = -I$(top_srcdir)/src -I$(top_srcdir)/lib
 test_etcp_link_stress_LDADD = $(LIBUTUN) $(CRYPTO_LIBS) $(COMMON_LIBS)
 
-test_auto_socket_dynamic_SOURCES = test_auto_socket_dynamic.c
+test_auto_socket_dynamic_SOURCES = test_auto_socket_dynamic.c $(test_clock_sources)
 test_auto_socket_dynamic_CFLAGS = -I$(top_srcdir)/src -I$(top_srcdir)/src/transport_layer -I$(top_srcdir)/src/routing_layer -I$(top_srcdir)/lib
 test_auto_socket_dynamic_LDADD = $(LIBUTUN) $(CRYPTO_LIBS) $(COMMON_LIBS)
+test_auto_socket_dynamic_LDFLAGS = $(test_clock_ldflags)
 
 test_media_delivery_full_SOURCES = test_media_delivery_full.c
 test_media_delivery_full_CFLAGS = -I$(top_srcdir)/src -I$(top_srcdir)/src/media_delivery -I$(top_srcdir)/src/media_async -I$(top_srcdir)/lib -I$(top_srcdir)/src/transport_layer -I$(top_srcdir)/src/routing_layer -I$(top_srcdir)/src/chat
diff --git a/tests/test_auto_socket_dynamic.c b/tests/test_auto_socket_dynamic.c
index 046669d6..45fec032 100644
--- a/tests/test_auto_socket_dynamic.c
+++ b/tests/test_auto_socket_dynamic.c
@@ -6,6 +6,7 @@
 #include <ftw.h>
 #include "../lib/platform_compat.h"
 #include "test_utils.h"
+#include "test_clock.h"
 #ifndef _WIN32
 #include <net/if.h>
 #include <sched.h>
@@ -70,6 +71,7 @@ static struct test_ctx {
     uint32_t total_recv;
     uint32_t pre_delete_total_recv;
     int draining;
+    uint8_t probe_payload[256][PROBE_SIZE - 9]; // Периодический эталон для каждого младшего байта seq+direction.
 } ctx;
 
 static char tdir[] = "/tmp/utun_as_XXXXXX";
@@ -257,7 +259,7 @@ static void send_ready(struct ll_queue* q, void* arg) {
     uint32_t seq = ++p->sent, direction = p - pending;
     entry->len = PROBE_SIZE; entry->dgram[0] = ETCP_RT_ID_TEST;
     memcpy(entry->dgram + 1, &seq, 4); memcpy(entry->dgram + 5, &direction, 4);
-    for (int i = 9; i < PROBE_SIZE; i++) entry->dgram[i] = (uint8_t)(seq + direction + i * 17);
+    memcpy(entry->dgram + 9, ctx.probe_payload[(seq + direction) & 255u], PROBE_SIZE - 9);
     p->budget--;
     if (etcp_send(p->conn, entry) != 0) {
         queue_dgram_free(entry); queue_entry_free(entry);
@@ -280,8 +282,8 @@ static void receive_probe(struct ll_entry* entry, int direction) {
         fprintf(stderr, "sequence dir=%d wire_dir=%u received=%u seq=%u sent=%u\n", direction, wire_direction, p->received, seq, p->sent);
         fail("missing, duplicate or out-of-order packet"); goto done;
     }
-    for (int i = 9; i < PROBE_SIZE; i++) {
-        if (entry->dgram[i] != (uint8_t)(seq + direction + i * 17)) { fail("corrupt probe payload"); goto done; }
+    if (memcmp(entry->dgram + 9, ctx.probe_payload[(seq + direction) & 255u], PROBE_SIZE - 9)) {
+        fail("corrupt probe payload"); goto done;
     }
     p->received++;
     ctx.total_recv++;
@@ -776,11 +778,14 @@ static void cleanup(void) {
 int main(void) {
     debug_config_init();
     debug_set_level(DEBUG_LEVEL_WARN);
+    test_clock_init(TRAF_SEND_TB); // Шаг не крупнее периода отправки; объём трафика и фазы остаются прежними.
     if (getenv("UTUN_TEST_DEBUG")) {
         debug_set_category_level(DEBUG_CATEGORY_SOCKET, DEBUG_LEVEL_INFO);
         debug_set_category_level(DEBUG_CATEGORY_CONNECTION, DEBUG_LEVEL_INFO);
     }
     utun_instance_set_tun_init_enabled(0);
+    for (unsigned base = 0; base < 256; base++) for (int i = 9; i < PROBE_SIZE; i++)
+        ctx.probe_payload[base][i - 9] = (uint8_t)(base + i * 17);
     ctx.allocations_before = u_get_allocated_count();
     setup();
     if (ctx.result) return 1;
@@ -807,7 +812,7 @@ int main(void) {
 
     { uint64_t start = get_time_tb();
       while (!ctx.result && (int)(get_time_tb() - start) < TIMEOUT_TB + 50000)
-          uasync_poll(ctx.ua, POLL_MS); }
+          test_clock_poll(ctx.ua, POLL_MS); }
 
     fprintf(stderr, "final result=%d\n", ctx.result); fflush(stderr);
 
@@ -825,6 +830,7 @@ done:
         uasync_destroy(ctx.ua, 0); ctx.ua = NULL;
     }
     cleanup();
+    test_clock_finish();
     if (u_get_allocated_count() != ctx.allocations_before) {
         u_report_unfreed_blocks(); fail("allocations leaked after fixture cleanup");
     }