Far too many variables to answer you question.
Full new build?
Clean OS install?
Nothing else running in the background?
Latest drivers installed?
GPU usage in same games?
How much system RAM do you have, and what is in use?
etc.
Sorry yeah a bit more detail would help, its basically a new build with clean OS install, corsair icue was running but I closed it down, tested again with not much improvement. All drivers up to date, bios is the newest revision. I will get the exact GPU and ram usage.
System specs are:
i5 9600KF
Gigabyte Z390 Aorus pro WiFi motherboard
Corsair Vengeance RGB PRO 32 GB (4 x 8 GB) DDR4 3200
Gigabyte 2070 super
Sabrent 1TB Rocket NVMe PCIe M.2 2280 SSD
Does your motherboard support overclocking? I'd be amazed if it was limiting games anyway in it's stock form.
It does support overclocking but I am running the stock cooler from my i5 3570k until I get a cooler for Christmas, so I am holding off overclocking until then. Temps with the stock cooler are 65 Degrees C so I don't think temperature is an issue.
The 9600 is really not very good.
I am beginning to wonder this and debating going i5 or i9 but I was hoping the i5 would be better than it is.
With the 9600 being 6c/6t this isn't surprising at all. Get an overclock going, but if it continues, an i7 is the only real answer.
I will overclock once I get a decent cooler, I thought 6 cores and 6 threads would be a decent upgrade from the 4 on my previous i5 3570k it was just starting to struggle but the 9600KF doesn't seem to have been much of an upgrade!