Draw distance is set client side if I'm correct. It's under your control in the settings. Also, I'm not sure if it applies to draw distance, but I know it applies to others. Depending on which setting you have it at, it changes whether its GPU or CPU based. For example, if you have shadows set to anything except normal (correct me if I'm wrong) then it it sets it to CPU based, but on normal its GPU. ArmA 2 is weird like that