Hello @MrHardNails thank you for provising these additional steps to check for 100% CPU usage. We do not recommend overclocking any components in your PC when playing our games as a precaution, which is why we ask players not to use overclocking software such as Afterburner and the like, so thank you for bringing this up with your suggestions.
Here are some steps that helped our Siege players with high CPU usage after a recent update >>
-Check your power options in Windows and set it to High Performance in case of any CPU throttling. Open your Windows Settings, type 'Power Options, select 'Additional Power Settings', then select a High-Performance plan.
Try creating a new power plan in these options and set your maximum use of your CPU to 90% or another lower value, this can prevent your CPU from running at high usage, and will make your GPU work harder instead when playing the game, putting less strain on the CPU.
-Disable any in-game overlays you may have active in your game launcher, as using in-game overlays can sometimes contribute to high CPU use depending on the game
-Test the CPU usage after lowering some settings. In the games menu and your GPU control software, enable Vsync, lower your FPS usage, and lower your graphical preset. Running games on high or ultra with maximum FPS, can cause strain not only on your Vram but CPU too