Hello! I'm from Russia, Sakhalin island and we (my squad) play in Japan server because LOW Ping (44 ms), but last week the ping increased significantly (230 - 260 ms).
I began to investigate the issue of increasing ping, and is ready to conclude that the ping has increased at the server provider bf 1 (japan server's).
Since the Amazon server, the ping remained the same, I also did not notice an increase in the ping in other games(exmpl PUBG), but bf1 started having problems.
P.S. I apologize for my English, I was very bad study at school because I played a lot of games = (