Recently bought another gtx 980 to sli with and i am getting really bad performance in gta 5 with it.
Both cards are running at around 30% ive tried numerous fixes and re installed the drivers. Seems to be just GTA with this issue other games such as battlefield have between 70-80% gpu usage on each card.
Testing with ungine valley and heaven with yields high performance with sli enabled (as expected).
More aboutgta sli low gpu usage poor performance
How is gpu usage on a single card? It seems that the game was not realy multi gpu friendly