If upnp is disabled, poll the check less aggressively. TODO: should wait for a cond instead.

Core/Util/PortManager.cpp

@@ -477,6 +477,9 @@ int upnpService(const unsigned int timeout)
 
 	// Service Loop
 	while (upnpServiceRunning && coreState != CORE_POWERDOWN) {
+		// Sleep for 1ms for faster response if active, otherwise sleep longer (TODO: Improve on this).
+		sleep_ms(g_Config.bEnableUPnP ? 1 : 100);
+
 		// Attempts to reconnect if not connected yet or got disconnected
 		if (g_Config.bEnableUPnP && g_PortManager.GetInitState() == UPNP_INITSTATE_NONE) {
 			g_PortManager.Initialize(timeout);
@@ -506,9 +509,6 @@ int upnpService(const unsigned int timeout)
                 upnpLock.unlock();
             }
 		}
-
-		// Sleep for 1ms for faster response
-		sleep_ms(1);
 	}
 
 	// Cleaning up regardless of g_Config.bEnableUPnP to prevent lingering open ports on the router