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If you need assistance in Portuguese, then it may be best to post over here.
I did take a look over the crash logs though and would suggest disabling Avast and giving the game a try. Based on the CPU, it seems we may be on a lower end machine. We can also try running the game with the 32 bit client.
If there's still issues we'd like to get a DxDiag report to look into this further.