When I try and play on the official server with Battleeye active, every time I move my mouse the game locks up for a second for every mouse movement. If I don't move my mouse and just move with the keyboard it doesn't cause this. But when I launch Atlas without Battleeye and play in Single Player it runs flawlessly.
Steps I've tried thus far
re-installing Battleeye
running it as admin
running Malware Bytes as recommended on the Battleeye official website
Any other suggestions I can try?