Render Scale is too high causing lost frames

Im playing on a laptop that cant run most games, but overwatch was fine for me at 40fps. that is, when my render scale was below 50%, now it runs at 17 fps on lowest graphics even on 50% render scale render. I just want to know how I can get it back to below 50 when I use automatic. it was at 42% and now when I use the automatic render scale it forces it up to 67%. anybody know how to lower it again so I can have my frames? ):

there is no slider bar.Just go to the advanced section under graphics quality and click the render scale.In the drop down window your going to see automatic-100%,50%,75%,100%,150%,200%…choose 50% i guess :confused: