Dolphin, the GameCube and Wii emulator - Forums

Sounds like the gpu just doesn't have the power to do the rendering at full speed at 1080p in the most complex scenes (ie during the 'special attacks'). Likely a lower resolution is the only solution (assuming you don't have other gpu load increasing options like msaa or anisotropic filtering enabled).

Also, remember even if you have the maxwell 860m instead of the kepler 860m (I hate rebrands), it may be the same chip as the 750ti, but in a laptop it'll likely be extremely temperature and power constrained. This can cause lower performance than the desktop variant, even if it's running exactly the same chip - especially over longer periods of load (as if the cooling can't keep up it'll throttle when it gets heat soaked).

actually i think i found out what my issue was, it was the MSI afterburner that was causing the issue.
you see, i have a modified bios on my pc that is overclocked and i used MSI afterburner to slightly overclock it a tad more "it worked wonders for Steam games". however it was causing that sudden jump in gpu causing the stuttering. once i shut off MSI afterburner i was able to put 1080p and Anisotropic filtering with no stuttering from the Special moves.