My PC Spes;
GeForce GTX 650
Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
8.00 GB RAM (7.95 GB usable)
1920 x 180, 60Hz
Windows 7 Home Premium 64bit

Your screen might be the problem 1920 x 180, 60Hz ;)

@Asteliks
That was an easy fix, now says 1080... game still freezes but!!

Hello,
thank you for reporting the problem. I have examined your crash files. Could you please remove all startup parameters and verify your game data?
https://support.steampowered.com/kb_article.php?ref=2037-QEUH-3335

After that, please create a new bunch of crashdumps and attach them again, thank you. This will ease the investigation. Also, one of the crashfiles suggests that the crash might be connected to your Steam Client. Please, ensure that you are running the latest version and consider running it as an Administrator from now on. I'll be waiting for the new crashdumps without start up parameters and custom allocators, thank you very much.

Is it always on the same server? I had a similar problem caused by a corrupted mission file for a server I regularly played on. I would be able to play for a random length of time. Deleting the mission file from the mpmissions cache in the arma 3 apps data folder solved it for me. It would also make sense that the issue persisted after a full reinstall as the apps data folder isn't necessarily deleted even after a uninstalling the game.

Hi Iceman, thank you for taking the time to investigate my issue. I feel a hint of irony that Iceman will help me with my game Freezing!! Cenwulf, different servers in my tests below and each time I had to download the mission files from the server anyway. Do you think I should try removing all my AppData for Arma 3??

So this is what I have tried this evening.

1. Ran Steam as Admin
2. Verify integrity of game cache (all files successfully validated)
3. Checked Set Launch Options (all clear)
4. Ran Arma3 (note this is done through Steam not using the Open Launcher Option or Play withSix)
5. Disabled all Mods
6. Restarted Arma 3
7. Joined game with 53ms ping with around 12 of x players
8. Spent 10-20 mins playing until FREEZE (Crash dumps 19th @ 0701 PM)

I wasn't sure if maybe having Mods already enabled made a difference so I tried again, meanwhile Steam Update started and completed.

1. Ran Steam as Admin
2. Verify integrity of game cache (all files successfully validated)
3. Ran Arma3
4. Join game with 77ms ping 0/39 players (me against the world)
5. Spent a nice amount of time in an attack heli raining down terror on Camp Rogain (not sure if I killed anyone but the buildings felt it!)
6. Landed a few clicks SW then proceeded on foot until I approached the combat zone
7. Caught my breath from running so far and FREEZE! (Crash dumps 19th @ 0804 PM)

I also included a .rpt from 19th @ 0646 PM, not sure why that .rpt is there but it might have some significance.

Would it help if I installed Arma 3 standalone and not through Steam Client? If so am I able to do this without purchasing a new copy?

Crash Dumps here https://onedrive.live.com/redir?resid=1FF75924FC220F6E!715&authkey=!AC1mdogDZOfAX4Q&ithint=folder%2crar in "Arma 3 Crashes 19.02.2015.rar"

We applied fixes to get rid of the issue, could you please try it when the new update is out? It should be in a week and a bit.

I cannot wait to test it, I will be thoroughly impressed by your companies speedy resolution if all goes well. Thank you.

Any chance you could elaborate on the fix? I'm a systems analyst and am intrigued by the cause of my issue. Thanks again Iceman.

The problem was caused by the recently updated PhysX libraries in the last update. I cannot be more specific, sorry.

No, if you're still freezing after downloading a fresh copy of a mission file then it's not the same issue I was experiencing. I wouldn't recommend deleting you arma 3 app data folder.