improve training speed and add speed constrain

scripts/commons/Server.py

@@ -18,9 +18,18 @@ class Server():
         # makes it easier to kill test servers without affecting train servers
         cmd = "rcssservermj"
         for i in range(n_servers):
+            port = first_server_p + i
+            mport = first_monitor_p + i
+
+            server_cmd = f"{cmd} --aport {port} --mport {mport} --no-render  --no-realtime"
+
             self.rcss_processes.append(
-                subprocess.Popen((f"{cmd} --aport {first_server_p+i} --mport {first_monitor_p+i}").split(),
-                stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT, start_new_session=True)
+                subprocess.Popen(
+                    server_cmd.split(),
+                    stdout=subprocess.DEVNULL,
+                    stderr=subprocess.STDOUT,
+                    start_new_session=True
+                )
             )
 
     def check_running_servers(self, psutil, first_server_p, first_monitor_p, n_servers):
@@ -60,4 +69,4 @@ class Server():
     def kill(self):
         for p in self.rcss_processes:
             p.kill()
-        print(f"Killed {self.n_servers} rcssservermj processes starting at {self.first_server_p}")
+        print(f"Killed {self.n_servers} rcssservermj processes starting at {self.first_server_p}")