Hello,
it is possible that some of your hardware is corrupted and is causing trouble under a full load. It is also possible that you have not experienced this with other games, Arma 3 more performance demanding than most of the today's games. I would suggest to run a couple of heavy benchmarks to see if the problems occur as well.
The most suitable for you could be:
http://unigine.com/products/heaven/
http://unigine.com/products/valley/
http://www.memtest.org/
Please run these benchmarks (at least one hour each without interruption) at highest possible settings. Then you will see if your hardware is showing incorrect behaviour under heavy stress or not.
Thank you very much.

Good day
I will do so and will addend relevant results here.
Thank you

Located the following regarding Exit Code 255 from a google search;

"Exit code 255 sounds like a .NET exception within the tool (target application) you're running. You'll not be able to catch this exception in your code.

I would register a debugger for the target application to see what exception it throws:

Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options

Create a key with the name of the executable you're starting

Create a string called Debugger

Give it a value, e.g. vsjitdebugger.exe if it's a .NET application

This will start the debugger and you can catch exceptions."

Please inform me whether I should be looking for Exit Code 255 in the .NET system or in the language that ARMA is written in, and please inform which language that is, or if it is neither.

Same thing occuring with error code;

1 073 741 819

Possibly related;

"Process.Exited Event

.NET Framework 3.5"

https://msdn.microsoft.com/en-us/library/vstudio/system.diagnostics.process.exited%28v=vs.90%29

Hello,
the exit code is not related to .NET Framework as Arma 3 is not a .NET application.

The source of the exit code - and thus its meaning - is not always clear. If application crashes the exit code is often a Windows error code. If this is the case, then 0x000000FF matches an error ERROR_EA_LIST_INCONSISTENT (https://msdn.microsoft.com/en-us/library/cc231199.aspx). That would suggest a corrupted file, and running chkdsk on all drives may help (or may not).

Also if you open an Event Viewer, there should be a record of the error in Windows Logs/Application log that contains more information.

Thank you very much. I find this all quite interesting.

As a side-note, I reinstalled Windows and am no longer receiving this error (touch wood).

Again, thank you very much for your time and information. If I discover anything of use I will post it here for your future/current reference.

Hi, I've uploaded some crash dumps for a possible memory leak a few users I know are experiencing (including myself).