Lagging background screen , lobby

[Foun]

Hello few days ago i was playing bns normally, Then i got lancher error, but after restarting launcher worked but after loggin in it crashed. Next day i open launcher and made file repair. But then after game start to Pin putting all started to lag , pin putting , character lobby . So i deleted bns and installed again but still having these lags . Please help me to fix this . Thank you !!!