BSNL FTTH HIGH PING ON SEA SERVERS

Please help me solve this problem ..... I have bsnl ftth with AONT-100C modem and a TP-Link router
Even with wired connection I get very high ping on SOUTH EAST ASIA servers on fortnite and other games
I have restarted my modem several times but no reduction in ping............ once after restart I got ping in 50 range but then never again..... please give me a solution
Currently my ip is 103.205.x.x and sometimes I also get 59.x.x.x

I am having the same problem, my IP is in 61.0.x.x range. My ping was good when i had IP in the range of 103.x.x.x. Just waiting for local ISP to launch 50-100 Mbps plan.