cscommands.comr_light_probe_volume_debug_grid
Show LPV debug grid, 0: off, 1: closest only 2: closest and keep 3: all
For this command to work you must first run
sv_cheats true in the console. It only works on a local map or a private server — not in matchmaking. sv_cheats is a built-in Valve command and is completely safe from VAC.