bf6 breakthrough is very slow 😭

Im new to bf6 most of the time i played only team deathmatch , it works fine but i recently tried to play breakthrough unfortunatly i cant play that **bleep** , player wont stop properly and player movement is very slow , its like player in water 💔💔
Btw im from sri lanka , i bought game from 3999  ind rupees from ea , its lots of money for me , this is my first AAA game that i played
im very disappointed