When starting my game with BattlEye enabled, random legitimate applications on my system are being terminated.
Recently several Windows 10 users have started experiencing this issue without a change on our side. After investigating we have concluded that it is caused by NVIDIA's new "(Ultra-)Low Latency Mode". Until NVIDIA provides a fix please disable this feature by opening your NVIDIA Control Panel, selecting "Manage 3D settings" -> "Global Settings" -> "Low Latency Mode" and changing this setting to "Off". Click "Apply" and potentially also reboot your system.
This answer is copied from BE's FAQ and slightly adapted to be Unturned-specific. Click here to visit the BE support page.