I have the same hardware. I'm overclocked to 4.3ghz. I can run full 60 fps with HLE @ 4x IR and 16x AF. However, if I want the level music to work (which I prefer), I enable LLE and have to turn the settings down to like 3x IR and 4x AF to not drop frames.
Windows 10 Pro 64-Bit | Core i5 4690K @ 4.3ghz | eVGA SC+ ACX 2.0 GTX 980 Ti (x2 Sli) | Noctua NH-D15 | 16GB DDR3-2400 ram | MSI Z97 Gaming 5 | 500 GB Samsung 850 EVO SSD
