Performance Metrics for PCVR project - Quest 3

Hi there, I'm profiling my PCVR game and I've noticed there's a huge gap in my cpu/gpu frame rates when I'm testing PCVR compared to PC mode. For all I've read so far, pc screen mirroring doesn't re draw my entire scene but still adds a little extra performance budget overall, meaning, the huge difference between both platforms that I'm noticing shouldn't happen. Could someone explain to me what may I be missing? I'm using Unreal Insights btw.pc mode statspcvr stats