First of all, sorry for the mistakes. I have NO PROBLEM on other games. I had no problem at the begining of Beyond Light. So I've tried to open my ports (box firewall and Windows firewall) with Bungie's port forwarding and this video https://www.youtube.com/watch?v=hDswx8xGG8Q and my NAT is now open. I thought my problem was gone but my ping increases throughout the match in PVP. I start with 70 (wich is normal on Destiny because i have ADSL), when I die it increase to 500 ping, when I respawn it drop to 90, and for no reason my Ping increase to 1000 or more and I'm disconnected. Then I tried https://www.youtube.com/watch?v=4HyRHCXj0oA&t , but nothing changed so I turned everything back to normal. My PC is directly plugged to my internet box.