3950x + 2070 super - Stuttering multiple times per game

I get stutters a couple of times a game (usually around team fight engages) for about half to 1 second.

Graphics level is set to max

I have set up a new PC running
3950x
2070 Super
32gb ram @3600mhz
Pcie Gen4 m.2 drive
Windows 10

All my drivers/Bios is up to date. Power setting is on performance, gsync is OFF,

Is there any settings i can adjust in nvidia control panel or else where in game or windows to prevent this from happening, as i feel my PC is way over spec to run hots but its having issues my i7 6700k and 980ti didn’t have.

Happy for suggestions.

Cheers
Chris