Question 'm not sure why my GPU is under performing

Apr 17, 2019
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I have a 1080ti and a 7700k with 16gb of ddr4 ram but in every game i play my frames are lower than they should be and in all the benchmarks i run my scores are lower than they should be, for example I'm only hitting a score of 14k in firestrike whereas 1080ti's should all get above 20k. I have tried all the nvidia control panel settings and reinstalled drivers twice and updated my bios but nothing seems to work.
Any help would be greatly appreicated.
 
Apr 17, 2019
4
0
10
The psu is this one
Corsair CP-9020098-UK VS Series ATX/EPS 80 PLUS Power Supply Unit, 650 W
I have a z270x ultra gaming motherboard and it is in the silver PCIe slots closest to the CPU
 
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