1. Generally speaking from an experience POV I have found that any game experience has been improved upon by separating it onto its own drive from the OS. this includes all my single player FPS games as well. There's probably a technical aspect I just don't know what it is. read/writes maybe.

2. Symlinking gives slight performance increases but nothing that will drastically change the way you play. Alot of it is configuration ease. I've never run into the issues that Ualaa has run into thank goodness. That sounds like it could be very frustrating.

3. This should be the exact same. Whether you set it manually or do it thru keyclone it should be doing the same thing.