Oh sorry. My bad. My brain saw sure sm and inserted the sm7b where it wasn’t. Seems to be the goto microphone I see everywhere.

An external GPU may be the way to go. Doesn’t have to be a beast of a GPU. Probably best to find one thats AMD for easy compatibility. You could also find one that has the amount of connections you need.

Sure sm7b are closer to 400 each.

The Linux build uses OpenGL so its slow. The windows version through proton will use Vulkan which is much faster.