For some reason after switching from a crosshair V formula Z to the maximus VIII extreme i am getting a massive drop in fps. had a look around and couldnt find anything that helped not sure whats causing the issue beacuse im now getting lower fps with the 980 ti than i was before and its now even lower than when i was using an r9 290 msi gaming gpu

current Rig
MoBo:Maximus VIII extrme
Cpu: Intel i7 6700K
GPU: rog GTX 980 Ti matrix 6GB
Ram: 4x8 GB corsair vengence 3000Mhz DDR4
PSU: EVGA 1300W gold
OS: windows 10 64 bit

original rig
MoBo: Crosshair V formula Z
CPU: AMD fx 9590
GPU: rog GTX 980 Ti matrix 6GB
Ram: 4x4 GB 1600Mhz DDR3
PSU: EVGA 1300W gold
OS: windows 10 64 bit

anyhelp would be much apreciated