Why does Human Host drop frames in combat?

Frame times jumped from 8ms to 45ms during group fights. I disabled my camera in Device Manager, but that killed my stream. I used GamePP's Conflict Tool to set Razer Synapse to Manual start and enabled hardware encoding in OBS. RivaTuner showed frame intervals stabilizing at 7-12ms. HWiNFO confirmed CPU usage stayed between 65-72%, allowing me to verify that the combat flow was smooth and the capture was stable.