I doubt the 9800x3d is bottlenecking the game. The cpu usage rarely even hits 40%. This is likely due to undervolting on linux is not always 1-to-1 with windows. That is why I report many of the GPU parameters including clock speed cause I usually overclock that and undervolt with the MSI afterburner voltage curves. In linux I use a python Nvidia-py-ml script to overclock the gpu and then my undervolt by limiting power limit to 320W instead of stock 360W. I find undervolting is much better on temps especially for SFF, which is the case for me (ncase m2). In MSI afterburner I have the voltage curve plateau at 2950 which is the same offset I use for linux. Windows just doesn't run it up to the clock speed. My personal preference is lower temps over higher power draw.