That’s to be expected; see for example: GLITCHOUT waveform is not in square shape and doesn't fully drive the MOSFET
glitch_hp and glitch_lp control which of two MOSFETS are used to pull Vcc to ground; they can be used individually, or together. Maybe the schematic can help understand: https://github.com/newaetech/chipwhisperer/blob/develop/hardware/capture/chipwhisperer-lite-32bit/cw-lite-arm-main.pdf
Jean-Pierre