diff --git a/overviewer_core/aux_files/genPOI.py b/overviewer_core/aux_files/genPOI.py
index 2e69450..bbcb94a 100644
--- a/overviewer_core/aux_files/genPOI.py
+++ b/overviewer_core/aux_files/genPOI.py
@@ -142,7 +142,7 @@ def parseBucketChunks(task_tuple):
         if i == 250:
             i = 0
             cnt = 250 + cnt
-            logging.info("Found %d markers in thread %d so far at %d chunks.",
+            logging.debug("Found %d markers in thread %d so far at %d chunks.",
                          sum(len(v) for v in markers.values()), pid, cnt)
 
     return markers
@@ -502,6 +502,8 @@ def main():
     filters = set()
     marker_groups = defaultdict(list)
 
+    logging.info("Searching renders: %s", list(config['renders']))
+
     # collect all filters and get regionsets
     for rname, render in config['renders'].items():
         # Convert render['world'] to the world path, and store the original
@@ -559,14 +561,15 @@ def main():
     markers = dict((name, dict(created=False, raw=[], name=filter_name))
                    for name, filter_name, __, __, __, __ in filters)
 
+    all_rsets = set(map(lambda f : f[3], filters))
+    logging.info("Will search %s region sets using %s filters", len(all_rsets), len(filters))
+
     # apply filters to regionsets
     if not args.skipscan:
-        # group filters by rset
-        def keyfunc(x):
-            return x[3]
-        sfilters = sorted(filters, key=keyfunc)
-        for rset, rset_filters in itertools.groupby(sfilters, keyfunc):
-            handleEntities(rset, config, args.config, list(rset_filters), markers)
+        for rset in all_rsets:
+            rset_filters = list(filter(lambda f : f[3] == rset, filters))
+            logging.info("Calling handleEntities for %s with %s filters", rset, len(rset_filters))
+            handleEntities(rset, config, args.config, rset_filters, markers)
 
     # apply filters to players
     if not args.skipplayers:
diff --git a/overviewer_core/world.py b/overviewer_core/world.py
index c104c83..9702667 100644
--- a/overviewer_core/world.py
+++ b/overviewer_core/world.py
@@ -882,13 +882,6 @@ class RegionSet(object):
     def __repr__(self):
         return "<RegionSet regiondir=%r>" % self.regiondir
 
-    def __lt__(self, other):
-        """This garbage is only needed because genPOI wants to use
-        itertools.groupby, which needs sorted keys, and Python 2 somehow
-        just sorted objects like ???????? how????? why?????
-        """
-        return self.regiondir < other.regiondir
-
     def _get_block(self, palette_entry):
         wood_slabs = ('minecraft:oak_slab','minecraft:spruce_slab','minecraft:birch_slab','minecraft:jungle_slab',
                         'minecraft:acacia_slab','minecraft:dark_oak_slab','minecraft:petrified_oak_slab')
@@ -1573,13 +1566,6 @@ class RegionSetWrapper(object):
     def __init__(self, rsetobj):
         self._r = rsetobj
 
-    def __lt__(self, other):
-        """This garbage is only needed because genPOI wants to use
-        itertools.groupby, which needs sorted keys, and Python 2 somehow
-        just sorted objects like ???????? how????? why?????
-        """
-        return self.regiondir < other.regiondir
-
     @property
     def regiondir(self):
         """