Virtual Machine question

Hello. I've been using Windows 10 for a couple months now, for some reasons. I have been thinking about moving to Gnu/Linux, especially since Unity supports it now (much thanks <3).

The issue here is.. while it does run and I have tested it to confirm if my game project works or not.. I have tested it only in a virtual machine. The Virtual OS I have used is Linux, specifically Manjaro (Arch).

My questions here are:
1. why does the Vector3.LerpUnclamp() function not work.. specifically - it freeks out. I had to use the normal Lerp.
2. Even with using normal Lerp.. I still get 30-90 ms of latency versus stable 0-40 just on my Win 10 host. Why is that? Is it a problem that I'm using a VM on which I've opened ports? Also my character doesn't move too smooth.

What my game project is, is Multiplayer First Person Shooter. It's a server-client model with both TCP and UDP support. I am running the server project in the VM (Manjaro while my client project is ran from the host (win 10).

Is this the case of me just using a Virtual Machine? Will these problems go away on a real Gnu/Linux machine as a host? Or is there something else I can do? Please let me know.