This has been happening since i first started playing Arma 3 (about six months ago).

There is no connection with something specific i do in-game when the crash happens, it's just random. Could take 20 minutes or several hours before i crash.

The game stutters once and then quickly after it just freezes and forces me to ctr+alt+del to shut it down.

This is the oldest error message i have saved, dating 5-6 months back:
Problem Event Name: APPCRASH
Application Name: arma3.exe
Application Version: 0.52.103.279
Application Timestamp: 5149ee57
Fault Module Name: arma3.exe
Fault Module Version: 0.52.103.279
Fault Module Timestamp: 5149ee57
Exception Code: c0000005
Exception Offset: 002c1ea0
OS Version: 6.1.7601.2.1.0.256.1

Here's one from three days ago:
Problem signature:
Problem Event Name: APPCRASH
Application Name: arma3.exe
Application Version: 0.74.108.135
Application Timestamp: 51ee90e3
Fault Module Name: arma3.exe
Fault Module Version: 0.74.108.135
Fault Module Timestamp: 51ee90e3
Exception Code: c0000005
Exception Offset: 005aa910
OS Version: 6.1.7601.2.1.0.256.1

And one from last night:
Problem signature:
Problem Event Name: APPCRASH
Application Name: arma3.exe
Application Version: 0.74.108.135
Application Timestamp: 51ee90e3
Fault Module Name: arma3.exe
Fault Module Version: 0.74.108.135
Fault Module Timestamp: 51ee90e3
Exception Code: c0000005
Exception Offset: 00a3ae1d
OS Version: 6.1.7601.2.1.0.256.1

I really love this game but these crashes makes it hard and I'm seeing myself playing less. Would love any help at all with this.