ARMA 3 - Does not open in 64-bit ( The memory can not be read)

[ARMA 3 - Does not open in 64-bit ( The memory can not be read)]

 

Yes, only 32 bits.

 

:c

[ARMA 3 - Does not open in 64-bit ( The memory can not be read)]

 

Hello Sirs, I am facing problems in my ARMA 3, since the last update I can not open the game in 64bit mode, in addition to having sudden drops of fps so far I have not found any solution, I need a lot of help!!

 

Minhas configurações:
i5 4460
GTX 970
8GB RAM