Question Performance issue with my PC

[AX_DL]

20-09-2020, 08:08:45 FortniteClient-Win64-Shipping.exe benchmark completed, 33782 frames rendered in 265.203 s
Average framerate : 127.3 FPS
Minimum framerate : 0.1 FPS
Maximum framerate : 201.8 FPS
1% low framerate : 0.1 FPS
0.1% low framerate : 0.1 FPS
when i using my mouse fast to right or left i got drop frame to 5 FPS

I7 4790
16 GB ram
GTX 970
z97 gaming
SSD 240 GB

 

[rgd1101]

make and model of the psu?
cpu/gpu temp and usage during the game?
malware scan the system?