P2P releases can sometimes encounter startup errors. Based on official known issues :
DirectX 10 compatible GPU with at least 512 MB VRAM. ArmA 3 v2.10.149954-P2P.torrent
Access to the powerful Eden Editor , allowing you to create custom scenarios, missions, and complex military operations. P2P releases can sometimes encounter startup errors
If the game fails to progress past the loading screen, try deleting the cache.ch file found in your %AppData% folder. allowing you to create custom scenarios