Troubles with Kalda (Call of Duty: Warzone)

Guys help me out a Xeon 1230v2 analogue i73770 12gb graphics card gtx1070 ozu was hot start the game, it was all good fps from 80 to 100 then all settings from 50до70 graphics card was loaded up to 98процентов to 40 and right now the game is unstable what to do