PPB: Reveal which cycles are created (and collected) on each frame

gc.garbage.patch

diff --git i/ppb/engine.py w/ppb/engine.py
index 4300133..bc25616 100644
--- i/ppb/engine.py
+++ w/ppb/engine.py
@@ -101,6 +101,7 @@ class GameEngine(Engine, EventMixin, LoggingMixin):
     def main_loop(self, collect_statistics: True) -> 'pandas.DataFrame': pass
 
     def main_loop(self, collect_statistics=False):
+        collect_statistics = False
         if collect_statistics:
             import numpy as np
             import pandas as pd
@@ -111,6 +112,7 @@ class GameEngine(Engine, EventMixin, LoggingMixin):
             for column in columns:
                 stats[column] = stats[column].astype(float)
 
+        gc.set_debug(gc.DEBUG_SAVEALL)
         with gc_disabled():
             for frame_count in count():
                 if not self.running:
@@ -129,8 +131,11 @@ class GameEngine(Engine, EventMixin, LoggingMixin):
                 self.manage_scene()
                 scene_end = time.monotonic()
 
-                gc_unreachable = gc.collect() if frame_count % 100 == 99 else 0
+                gc_unreachable = gc.collect()
                 gc_end = time.monotonic()
+                if gc.garbage:
+                    print(gc.garbage)
+                    gc.garbage.clear()
 
                 if collect_statistics: