well lately after driver updates to my MSI R9 270 has bin giving me lag and stutters in multiplyer my settings have never changed ever since driver update and game up and i am talking about battlefield 4 setting have bin at high and i am thinking about going with nvida gtx 970 from msi since its at a great price but i am looking at reports about possible amd cards like r9 290 getting a boost to 8gb vram before the year is out so i need help if i should just upgrade to nvidia or wait something to note is i am getting a 970 and possibly get another in the future for sli to double the performance please help me out of my decision