Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
With the EVGA Precision Tool you can review the usage of the Vram. You can open this in the backround and run your game and see if the Vram was maxed out. If yes this is a bottleneck and a card with more Vram would improve performance but usually at a 1080p this barely happens. If only a little bit more Vram would be needed a slight overclock could also already help to fix it. With the EVGA Precision Tool overclocking is pretty simple. When you open it there are slider for GPU and RAM clock. You can just move them a bit and see if the card can run it. You could then also save that profile normal or as windows start up profile if you want to run it permanently then you do not need to fittle arround with every system start. Just let me know if there are question about this.