Delve City nodes. Light stage when no enemies near

Hello!

I'd like to suggest to increase speed of obtaining light stage in Delve City nodes when no enemies around. Or make it instant. Or remove vulnerability of mobs in connected rooms if cap of light stages was hit. Or increase mob spawning speed if cap of light stages was hit in connected rooms.
Because it's morally tiring to hit new light stages cap due monsters were spawned after the room lighting was out and you are forced to re-hit the light stages cap.
Anything that would not require to re-hit light stages cap to clear remain monsters would be great.