Im assuming you have an intel core i5 6600K, if you have that processor than it should really be running Dolphin fine without you having to modify any driver settings and at higher resolutions as well. Also running on DX12 does really help in terms of performance.
Windows 10 x64 | Intel Core i7 4790K @ 4.4ghz | NVIDIA GeForce GTX 1070| 16GB DDR3-2400 | Bose Companion 5 | Sennheiser Momentum 2.0| Logitech G502 Proteus Spectrum
MacBook Pro Retina 15in 2014 | OS X El Capitan 10.11 | Core i7 4770HQ| Intel Iris Pro HD Graphics | 16GB-DDR3-1600