I am experiencing very bad packet loss which is making call of duty modern warfare unplayable. I attempted to set up port forwarding to help this but when setting up the ports i get an error saying the "rule already exists" for the external start and end ports. this is likely due to the port numbers overalapping but how can I set up ports then?
TCP - 3074, 27014-27050
UDP - 3074, 3478, 4379-4380, 27000-27031, 27036
In addition, I expect that port forwarding may not even fix the packet loss issue (as nothing else has so far), and therefore could anyone help me with fixing the packet loss issue?