Question 1, by far away I mean by in the game Minecraft. If he walks far away from me in the game then it starts to lag for me when I build and the same for him. Quesiton 2 I have not configured anything for one CPU, I just put the XPU in the CPU1 slot on the MOBO and everything seemed to work fine so I left it. Question 3 I have 4 Disks total, SATA 3/gbs and all the same models. 2 HDDs are in RAID 1 and then another 2 HDDs are in RAID 1 as well.