While I wait patiently for my application to be accepted, I wanted to share some info related to a bug I experienced while loading into the server.
Issue: Unable to move mouse / pointer stuck in center of screen on loading menu. Mouse Input was set to "Windows"
Present on all servers, not just GTAW
Solution: The issue is related to your client settings, specifically mouse input. Launch GTA 5 and go to Settings > Change Mouse Input to "direct input".
Hopefully this helps someone in the future.