diff --git a/klippy/reactor.py b/klippy/reactor.py
index aba4c06f5..aab57d992 100644
--- a/klippy/reactor.py
+++ b/klippy/reactor.py
@@ -231,21 +231,22 @@ class SelectReactor:
             return self._sys_pause(waketime)
         if self._prevent_pause_count:
             self.verify_can_pause()
+        # Determine if this greenlet is the main dispatch greenlet
         g = greenlet.getcurrent()
         if g is not self._g_dispatch:
-            # Switch to _check_timers (via g.timer.callback return)
+            # This greenlet has called pause() before and has a timer setup,
+            # so switch to _check_timers (via g.timer.callback return)
             return self._g_dispatch.switch(waketime)
-        # Pausing the dispatch greenlet - prepare a new greenlet to do dispatch
-        if self._greenlets:
-            g_next = self._greenlets.pop()
-        else:
-            g_next = ReactorGreenlet(run=self._dispatch_loop)
-            self._all_greenlets.append(g_next)
-        g_next.parent = g.parent
+        # Pausing the dispatch greenlet - setup timer to resume this greenlet
         g.timer = self.register_timer(g.switch, waketime)
         self._next_timer = self.NOW
-        # Switch to _dispatch_loop (via _end_greenlet or direct)
-        eventtime = g_next.switch()
+        if self._greenlets:
+            # Switch to _end_greenlet to activate cached dispatch greenlet
+            g_next = self._greenlets.pop()
+            eventtime = g_next.switch()
+        else:
+            # No cached greenlets, switch to run() to create new dispatcher
+            eventtime = g.parent.switch()
         # This greenlet activated from g.timer.callback (via _check_timers)
         return eventtime
     def _end_greenlet(self, g_old):
@@ -323,9 +324,10 @@ class SelectReactor:
             self._setup_async_callbacks()
         self._process = True
         self._prevent_pause_count = 0
-        g_next = ReactorGreenlet(run=self._dispatch_loop)
-        self._all_greenlets.append(g_next)
-        g_next.switch()
+        while self._process:
+            g_next = ReactorGreenlet(run=self._dispatch_loop)
+            self._all_greenlets.append(g_next)
+            g_next.switch()
     def end(self):
         self._process = False
     def finalize(self):