Video editing build SLOW!

[Tommky]

All,

I’ve recently built this computer for video editing Sony A7Siii footage and it’s really slow in premiere pro. 

Ryzen 3900X
Nvidia 1660 super
2 x 16GB 3200Mhz Crucial Ballistix
TUF gaming X570 Plus WiFi
1TB Sabrent Rocket Nvme 

Others seem to be editing A7Siii footage with less powerful CPUs very smoothly. For me whoever the timeline is very stuttery, I can’t scrub through thefootage quickly but it does export really quickly. MyPremiere pro setting are not the issue either aseverything is set to take full advantage of the hardware available. Do you think it’s the build or is it just thefootage, even though other says they can handle it fine with seemingly lesser systems. Graphics card onlyseems to be under any load when exports not while in the timeline. 

Thoughts please?!?!