diff --git a/applications/Volkov/docs/p19-copy-policy-results.md b/applications/Volkov/docs/p19-copy-policy-results.md
index 19be7ad..eccb5d1 100644
--- a/applications/Volkov/docs/p19-copy-policy-results.md
+++ b/applications/Volkov/docs/p19-copy-policy-results.md
@@ -119,11 +119,11 @@ SPRCMD.EXE 43080
 ```sh
 make hdd-p19-overwrite ALLOCS=3000
 tests/run_mame_hdd.sh build/hdd/p19_overwrite.chd \
-  tests/mame_p19_overwrite.lua artifacts/mame-p19/core-local 26
+  tests/mame_p19_overwrite.lua artifacts/mame-p19/core-local 180
 tests/check_p19_overwrite_hdd.sh build/hdd/p19_overwrite.chd
 
 make hdd-p19-policy ALLOCS=3000
 tests/run_mame_hdd.sh build/hdd/p19_policy.chd \
-  tests/mame_p19_policy.lua artifacts/mame-p19/policy-local 106
+  tests/mame_p19_policy.lua artifacts/mame-p19/policy-local 200
 tests/check_p19_policy_hdd.sh build/hdd/p19_policy.chd
 ```
diff --git a/applications/Volkov/docs/p5-stability-results.md b/applications/Volkov/docs/p5-stability-results.md
index 8f9fbd9..471c5d3 100644
--- a/applications/Volkov/docs/p5-stability-results.md
+++ b/applications/Volkov/docs/p5-stability-results.md
@@ -196,7 +196,7 @@ tests/run_mame_hdd.sh build/hdd/p5_panel_edges.chd \
 
 make hdd-p5-copy-faults ALLOCS=3000
 tests/run_mame_hdd.sh build/hdd/p5_copy_faults.chd \
-  tests/mame_p5_copy_faults.lua artifacts/mame-p5/faults-local 35
+  tests/mame_p5_copy_faults.lua artifacts/mame-p5/faults-local 180
 tests/check_p5_copy_faults_hdd.sh build/hdd/p5_copy_faults.chd
 
 make hdd-p5-viewer ALLOCS=3000
diff --git a/applications/Volkov/tests/mame_p19_overwrite.lua b/applications/Volkov/tests/mame_p19_overwrite.lua
index 8176f59..c7cd432 100644
--- a/applications/Volkov/tests/mame_p19_overwrite.lua
+++ b/applications/Volkov/tests/mame_p19_overwrite.lua
@@ -1,4 +1,5 @@
 -- P19: запускает target-пробу overwrite и фиксирует итоговую таблицу.
+-- Запас на I/O MAME 0.287: ранний выход обрывал пробу до ALL PASS.
 
 local KB = ":kbd:ms_naturl:"
 local HOLD = 0.06
@@ -40,10 +41,10 @@ end
 
 type_text(8.0, "d:\n")
 type_text(10.0, "DELRT.EXE\n")
-key(18.0, "P2.1", 0x10)
+key(90.0, "P2.1", 0x10)
 
 table.sort(events, function(a, b) return a[1] < b[1] end)
-local snap_times = {15.0, 20.0}
+local snap_times = {80.0, 95.0}
 local snaps_done = {}
 local start_time = nil
 local ports = nil
@@ -83,5 +84,5 @@ emu.register_periodic(function()
       manager.machine.video:snapshot()
     end
   end
-  if elapsed >= 22.0 then manager.machine:exit() end
+  if elapsed >= 100.0 then manager.machine:exit() end
 end)
diff --git a/applications/Volkov/tests/mame_p19_policy.lua b/applications/Volkov/tests/mame_p19_policy.lua
index 1886b7c..1e683e4 100644
--- a/applications/Volkov/tests/mame_p19_policy.lua
+++ b/applications/Volkov/tests/mame_p19_policy.lua
@@ -85,8 +85,16 @@ key(90.0, "P1.6", 0x20) -- inspect target.
 key(95.0, "P2.3", 0x80) -- F10.
 key(97.0, "P2.1", 0x10)
 
+-- Запас на I/O MAME 0.287: ответ readonly должен идти после двух копий.
+for _, event in ipairs(events) do
+  if event[1] >= 40.0 then event[1] = event[1] + 20.0 end
+end
+
 table.sort(events, function(left, right) return left[1] < right[1] end)
 local snap_times = {31.5, 38.0, 44.0, 54.0, 58.0, 70.0, 76.0, 85.0, 89.0, 92.0, 99.0}
+for i, t in ipairs(snap_times) do
+  if t >= 40.0 then snap_times[i] = t + 20.0 end
+end
 local snaps_done = {}
 local start_time = nil
 local ports = nil
@@ -127,5 +135,5 @@ emu.register_periodic(function()
       print("[p19-policy] snapshot t=" .. elapsed)
     end
   end
-  if elapsed >= 101.0 then manager.machine:exit() end
+  if elapsed >= 121.0 then manager.machine:exit() end
 end)
diff --git a/applications/Volkov/tests/mame_p5_copy_faults.lua b/applications/Volkov/tests/mame_p5_copy_faults.lua
index 48a68f9..3385d18 100644
--- a/applications/Volkov/tests/mame_p5_copy_faults.lua
+++ b/applications/Volkov/tests/mame_p5_copy_faults.lua
@@ -1,3 +1,4 @@
+-- Запас на завершение target-пробы в MAME 0.287.
 -- P5: отдельная детерминированная матрица состояний copy-job на HDD D:.
 
 local KB = ":kbd:ms_naturl:"
@@ -49,11 +50,11 @@ end
 
 type_text(8.0, "d:\n")
 type_text(9.0, "CPERR.EXE\n")
-key(16.0, "P2.1", 0x10) -- Enter после итоговой таблицы.
+key(90.0, "P2.1", 0x10) -- Enter после итоговой таблицы.
 
 table.sort(events, function(a, b) return a[1] < b[1] end)
 
-local snap_times = {14.0, 18.0}
+local snap_times = {80.0, 95.0}
 local snaps_done = {}
 local start_time = nil
 local ports = nil
@@ -100,7 +101,7 @@ emu.register_periodic(function()
     end
   end
 
-  if elapsed >= 20.0 then
+  if elapsed >= 100.0 then
     print("[p5-copy-faults] exit t=" .. elapsed)
     manager.machine:exit()
   end
diff --git a/applications/Volkov/tests/mame_p5_stability.lua b/applications/Volkov/tests/mame_p5_stability.lua
index 7bed2d2..71bd4f5 100644
--- a/applications/Volkov/tests/mame_p5_stability.lua
+++ b/applications/Volkov/tests/mame_p5_stability.lua
@@ -1,3 +1,10 @@
+-- На медленном DSS можно растянуть расписание, сохранив всю матрицу.
+local time_scale = tonumber(os.getenv("SPRCMD_TEST_TIME_SCALE") or "1")
+assert(time_scale and time_scale >= 1, "SPRCMD_TEST_TIME_SCALE должен быть >= 1")
+if os.getenv("SPRCMD_TEST_UNTHROTTLED") == "1" then
+  manager.machine.video.throttled = false
+end
+
 -- P5 на HDD D: 20 copy, 100 refresh и три полных cleanup-цикла.
 
 local KB = ":kbd:ms_naturl:"
@@ -136,7 +143,7 @@ end)
 emu.register_periodic(function()
   if not start_time then return end
   if not ports then ports = manager.machine.ioport.ports end
-  local elapsed = now() - start_time
+  local elapsed = (now() - start_time) / time_scale
 
   while index <= #events and elapsed >= events[index][1] do
     local event = events[index]
diff --git a/applications/Volkov/tests/run_mame_hdd.sh b/applications/Volkov/tests/run_mame_hdd.sh
index c9dca06..454661c 100755
--- a/applications/Volkov/tests/run_mame_hdd.sh
+++ b/applications/Volkov/tests/run_mame_hdd.sh
@@ -22,7 +22,20 @@ if pgrep -fl 'mame[^ ]* sprinter( |$)' | grep . >/dev/null 2>&1; then
 fi
 
 cd "$MAME_DIR"
-exec timeout "$TIMEOUT" ./mame.arm sprinter \
+# В macOS GNU timeout может отсутствовать; Python обеспечивает тот же лимит.
+if command -v timeout >/dev/null 2>&1; then
+    set -- timeout "$TIMEOUT"
+else
+    set -- python3 -c '
+import subprocess, sys
+try:
+    sys.exit(subprocess.run(sys.argv[2:], timeout=float(sys.argv[1])).returncode)
+except subprocess.TimeoutExpired:
+    print("run_mame_hdd.sh: истёк лимит времени", file=sys.stderr)
+    sys.exit(124)
+' "$TIMEOUT"
+fi
+exec "$@" ./mame.arm sprinter \
   -skip_gameinfo -video opengl -window -nofilter \
   -beta:wd179x:0 35hd -beta:wd179x:1 35hd \
   -flop1 ./IMG/mc.img -flop2 ./IMG/dss171u.img \