Im not here bc i tried nothing...im here bc i tried everything. My nats open. Latency, margin, line att, wireless strength is all good. Hard reset (xbox & router) & reconnected to internet many times. Brand new router from comcast 2 weeks ago. Weakest signal i got up here from multiple tests is 180 mbps. Problems started a few days ago so i dont think it has anything to do with the new router. Yea its not hardlined but what would that matter if it ran fine the same way last week plus my wireless strength is 100%. Theres nothing i have done differently since i was able to play last so i dont see how this problem falls on me. Plus while googling everything i can to fix this it seems this has been a continous problem since the game launched. I play gta, 2k18, and BF1 online...no problems. Just Halo 5. So unless halo 5 has specific requirements to play arena i cant see who else to blame other than the servers at this point. I hope it gets fixed.