Commented two lines from vis3D.py that are not needed.

.idea/misc.xml

@@ -3,5 +3,5 @@
   <component name="JavaScriptSettings">
     <option name="languageLevel" value="ES6" />
   </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.6.2 (/usr/local/bin/python3.6)" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file

.idea/swarm-sim.iml

@@ -5,7 +5,7 @@
       <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
       <excludeFolder url="file://$MODULE_DIR$/venv" />
     </content>
-    <orderEntry type="jdk" jdkName="Python 3.7" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.6.2 (/usr/local/bin/python3.6)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="TemplatesService">

lib/vis3d.py

@@ -202,8 +202,8 @@ class Visualization:
             self._wait_while_not_running()
             time_elapsed = time.perf_counter() - round_start_timestamp
 
-        GL.glFinish()
-        end = time.perf_counter_ns()
+        #GL.glFinish()
+        #end = time.perf_counter_ns()
 
     def remove_particle(self, particle):
         """