virtualbox.org

The question is simple: If i enable The Absolute Pointing Device for a Virtual Machine that i am running in a Headless server, and which i only connect to via RDP, will i have better performance than with the option disabled? or you can apply this only when using Virtualbox's interface only?
Its just that im realizing some lagish behaviour on the VM via RDP.......
Also.... i cannor perform any Alt Gr + ??? combination....

Absolute pointing device is only useful for the VB GUI when displaying the VM. RDP already has a similar concept of seamless mouse. The Absolute pointing device was added for guests that do not have GA installed or available, and yet still allow seamless mouse experience.

What do you mean by 'Altgr + ? combination'? Does the keyboard layout match? What do you get and what did you expect to happen?