Problem PS5 and softbank 10gbps

Hello, I took softbank 10gbps but I have problems with black ops 6 on ps5. I have to wait 10 minutes to find a game and I have a latency of 120-180 and sometimes 5. When I finish a game the players who were with me previously are no longer there and I have to wait another 10 minutes to find a new game.

Who has already had this problem? I want to change internet provider, who is the best for ps5?