Quoted from T-800:
The timer will stop eventually if there are no switch hits. Once it stops you have to hit another switch to restart it. I like to cradle on the right flipper and hold the ball as long as i can and then make an easy, low risk backhand to the right ramp to start the timer ticking down again.
At the end of the day, LSD is only like 5 shots, most of the time i find it easiest to just hit those shots and be done with it.
They’re risky shots on my machine. Those loops are wild and can end in a sdtm even on a perfect shot. I usually play the first one, but I’ll definitly time-out any subsequent ones.