Windows 8.1
Motherboard Gigabyte Sniper 2 1.0 with Bigfoot Networks Killer Ehternet Controller 6.0.0.24, software version 1.1.0.179
Intel i7-3770K
NVIDIA GTX 670
Router ASUS RT-AC56U wired connection
ISP: Bahnhof Sweden 100/100Mbit fibre
Same error, reproduced and fixed in the same manner for Arma 3 Dev, DayZ standalone (and similarly Battlefield 4).