Brand new PC not functioning correctly

Bought a new PC a few days ago and I’ve been trying to play Helldivers 2 and Battlefleet Gothic Armada 2 but the games are both very laggy with input and visual cutscenes.

My PC specs are:

CPU: AMD Ryzen 7 7700X CPU Cooler: 240mm AlO Fans: 4 Motherboard: B650 RAM: 32GB DDR5 5200MHZ RGB Graphics: AMD Radeon 7600 Primary Hard Drive: 4TB NVME (upgraded this from a 1TB NVME) Power Supply: 600W GOLD Networking: 802.11 ac Operating System: Windows 11

I also had to reinstall Windows after upgrading the hard drive. Does anyone have any idea on what could be causing the lag in Helldivers and Battlefleet when the PC should be meeting the recommended specifications for both?