diff --git a/audio/out/ao_wasapi_utils.c b/audio/out/ao_wasapi_utils.c
index 07c7ddb43f..6c5bfb3ab1 100644
--- a/audio/out/ao_wasapi_utils.c
+++ b/audio/out/ao_wasapi_utils.c
@@ -945,7 +945,7 @@ bool wasapi_thread_init(struct ao *ao)
 {
     struct wasapi_state *state = ao->priv;
     MP_DBG(ao, "Init wasapi thread\n");
-    int64_t retry_wait = 1;
+    int64_t retry_wait = 1000;
     bool align_hack = false;
     HRESULT hr;
 
@@ -1028,13 +1028,13 @@ retry:
         goto retry;
     case AUDCLNT_E_DEVICE_IN_USE:
     case AUDCLNT_E_DEVICE_INVALIDATED:
-        if (retry_wait > 8) {
+        if (retry_wait > 8000) {
             MP_FATAL(ao, "Bad device retry failed\n");
             return false;
         }
         wasapi_thread_uninit(ao);
         MP_WARN(ao, "Retrying in %"PRId64" us\n", retry_wait);
-        mp_sleep_us(retry_wait);
+        mp_sleep_ns(retry_wait);
         retry_wait *= 2;
         goto retry;
     }
diff --git a/osdep/timer-darwin.c b/osdep/timer-darwin.c
index a114d0d727..bb8a9b4324 100644
--- a/osdep/timer-darwin.c
+++ b/osdep/timer-darwin.c
@@ -28,10 +28,9 @@
 
 static double timebase_ratio_ns;
 
-void mp_sleep_us(int64_t us)
+void mp_sleep_ns(int64_t ns)
 {
-    uint64_t deadline = us * 1e3 / timebase_ratio_ns + mach_absolute_time();
-
+    uint64_t deadline = ns / timebase_ratio_ns + mach_absolute_time();
     mach_wait_until(deadline);
 }
 
diff --git a/osdep/timer-linux.c b/osdep/timer-linux.c
index 0289233695..ff4b137cb2 100644
--- a/osdep/timer-linux.c
+++ b/osdep/timer-linux.c
@@ -22,13 +22,13 @@
 #include <time.h>
 #include "timer.h"
 
-void mp_sleep_us(int64_t us)
+void mp_sleep_ns(int64_t ns)
 {
-    if (us < 0)
+    if (ns < 0)
         return;
     struct timespec ts;
-    ts.tv_sec  =  us / 1000000;
-    ts.tv_nsec = (us % 1000000) * 1000;
+    ts.tv_sec  =  ns / UINT64_C(1000000000);
+    ts.tv_nsec =  ns % UINT64_C(1000000000);
     nanosleep(&ts, NULL);
 }
 
diff --git a/osdep/timer-win2.c b/osdep/timer-win2.c
index dd7a42f0d1..db4c39d7ef 100644
--- a/osdep/timer-win2.c
+++ b/osdep/timer-win2.c
@@ -52,17 +52,17 @@ void mp_end_hires_timers(int res_ms)
 #endif
 }
 
-void mp_sleep_us(int64_t us)
+void mp_sleep_ns(int64_t ns)
 {
-    if (us < 0)
+    if (ns < 0)
         return;
     // Sleep(0) won't sleep for one clocktick as the unix usleep
     // instead it will only make the thread ready
     // it may take some time until it actually starts to run again
-    if (us < 1000)
-        us = 1000;
-    int hrt = mp_start_hires_timers(us / 1000);
-    Sleep(us / 1000);
+    if (ns < 1e6)
+        ns = 1e6;
+    int hrt = mp_start_hires_timers(ns / 1e6);
+    Sleep(ns / 1e6);
     mp_end_hires_timers(hrt);
 }
 
diff --git a/osdep/timer.h b/osdep/timer.h
index d76ad16129..b273cb405e 100644
--- a/osdep/timer.h
+++ b/osdep/timer.h
@@ -29,7 +29,7 @@ int64_t mp_time_us(void);
 // Return time in nanoseconds. Never wraps. Never returns 0 or negative values.
 int64_t mp_time_ns(void);
 
-// Return time in seconds. Can have down to 1 microsecond resolution, but will
+// Return time in seconds. Can have down to 1 nanosecond resolution, but will
 // be much worse when casted to float.
 double mp_time_sec(void);
 
@@ -37,8 +37,8 @@ double mp_time_sec(void);
 void mp_raw_time_init(void);
 uint64_t mp_raw_time_ns(void);
 
-// Sleep in microseconds.
-void mp_sleep_us(int64_t us);
+// Sleep in nanoseconds.
+void mp_sleep_ns(int64_t ns);
 
 #ifdef _WIN32
 // returns: timer resolution in ms if needed and started successfully, else 0
diff --git a/video/out/opengl/hwdec_dxva2egl.c b/video/out/opengl/hwdec_dxva2egl.c
index d870d982cd..0ca10ef7af 100644
--- a/video/out/opengl/hwdec_dxva2egl.c
+++ b/video/out/opengl/hwdec_dxva2egl.c
@@ -343,7 +343,7 @@ static int mapper_map(struct ra_hwdec_mapper *mapper)
     // of the above StretchRect. Timeout of 8ms is required to reliably
     // render 4k on Intel Haswell, Ivybridge and Cherry Trail Atom.
     const int max_retries = 8;
-    const int64_t wait_us = 1000;
+    const int64_t wait_ns = 1e6;
     int retries = 0;
     while (true) {
         hr = IDirect3DQuery9_GetData(p->query9, NULL, 0, D3DGETDATA_FLUSH);
@@ -353,10 +353,10 @@ static int mapper_map(struct ra_hwdec_mapper *mapper)
         } else if (hr == S_FALSE) {
             if (++retries > max_retries) {
                 MP_VERBOSE(mapper, "Failed to flush frame after %lld ms\n",
-                           (long long)(wait_us * max_retries) / 1000);
+                           (long long)(wait_ns * max_retries) / 1e6);
                 break;
             }
-            mp_sleep_us(wait_us);
+            mp_sleep_ns(wait_ns);
         } else {
             break;
         }
diff --git a/video/out/vo_null.c b/video/out/vo_null.c
index 2aa46f785f..0c49062e23 100644
--- a/video/out/vo_null.c
+++ b/video/out/vo_null.c
@@ -40,14 +40,14 @@ static void flip_page(struct vo *vo)
 {
     struct priv *p = vo->priv;
     if (p->cfg_fps) {
-        int64_t ft = 1e6 / p->cfg_fps;
-        int64_t prev_vsync = mp_time_us() / ft;
+        int64_t ft = 1e9 / p->cfg_fps;
+        int64_t prev_vsync = mp_time_ns() / ft;
         int64_t target_time = (prev_vsync + 1) * ft;
         for (;;) {
-            int64_t now = mp_time_us();
+            int64_t now = mp_time_ns();
             if (now >= target_time)
                 break;
-            mp_sleep_us(target_time - now);
+            mp_sleep_ns(target_time - now);
         }
     }
 }
diff --git a/video/out/vo_x11.c b/video/out/vo_x11.c
index 9775b23948..1087fc249e 100644
--- a/video/out/vo_x11.c
+++ b/video/out/vo_x11.c
@@ -299,7 +299,7 @@ static void wait_for_completion(struct vo *vo, int max_outstanding)
                             " for XShm completion events...\n");
                 ctx->Shm_Warned_Slow = 1;
             }
-            mp_sleep_us(1000);
+            mp_sleep_ns(1e6);
             vo_x11_check_events(vo);
         }
     }
diff --git a/video/out/vo_xv.c b/video/out/vo_xv.c
index 22bce03770..cffd3a797f 100644
--- a/video/out/vo_xv.c
+++ b/video/out/vo_xv.c
@@ -670,7 +670,7 @@ static void wait_for_completion(struct vo *vo, int max_outstanding)
                         " for XShm completion events...\n");
                 ctx->Shm_Warned_Slow = 1;
             }
-            mp_sleep_us(1000);
+            mp_sleep_ns(1e6);
             vo_x11_check_events(vo);
         }
     }