Anyone using a Light Rail Mover?

Ya I’m trying to match the speed it takes to go across with the pauses and even out the amount of time each spot is under direct light. Seems to work better with faster Motor speeds and less pause time. I have 2 tents set up the same and have one going faster and one going slower, both still equaling out the light amounts evenly, but the faster one seems to be keeping the plants shorter. Mind you they are 2 different strains so that will also impact it. But the one going slower seems to have stretched way more and some outer branch bud tops are even growing towards the middle with the light. So I think I’m gonna speed it up as well soon and end my little experiment. Lol I also have an app on my iphone for a light meter, It’s supposed to be fairly accurate, and my lights are 1000w HPS so lux is not an issue anywhere in the tent really. Even when the lights on the other end of the tent it’s still lighting up the other side good, not great, but equivalent to a cloudy day maybe.