updated 4.2 my FPS from 60 down to 10

after updated, DBD is so lag.
i use geforce 1060. CPU: i5
before updated FPS 60 with 100% resolution.
after, FPS ~10 with 0 resolution.
i buy 2 more DLC when DBD updating. but now DBD fxxk me up. i cant even play DBD normally.
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