Wait a minute. You are on a wireless connection? That can cause a lot of problems from the start. Wireless connections always have some level of bit errors associated with them.
For UDP, it means a lost packet. So, keeping those bit errors low is important. You can reduce the speed of the wireless connection which reduces the errors. Or you can physically connect to the router and not use wireless at all.
You basically have to remove the wireless part from the connection before any progress can be made.
I am assuming your physical link terminates into a wireless router where you live.