So Jeff went to the bus stop where he got on the bus, paid his fare, and went to near the back of the bus as the chronivac recorded the bus and the inhabitants. Mostly teens going to their middle or high school, but also a few adults getting closer to a shopping center or job or something. Then he went to school where he walked to as many areas as he could which wasn't that hard. He got to the gym at P.E., The lab areas during chemistry, and the general education building for the rest of the day. During his first break of the day he went into the library to "browse" as the chronivac recorded everything, and during his lunch the cafeteria was recorded when he picked up some edible stuffs... and filled out more of the school as he just went for a walk after eating. At the end of the school day Jeff went back to school on coincidentally the same bus and got back home with little fuss.
Jeff then immediately went to his room, and activated his chronivac and turned his closet to the start of his P.E. class where everyone would go to the lockers. Jeff wanted to try something with girls in their locker room, and fantasized a little too much as after a minute or two there was a commotion. "Like, the center of our locker room is a void!" one of the ditzier girls yelled to the coach. The coach not a female, but also realizing this was an emergency and there would probably not be any undressed teens went in to see that about 20 feet into the locker rooms there was nothing. Jeff also looked with some other guys and yep... nothing... Jeff hadn't gotten a good look at those lockers for a good reason, and as it turned out the chronivac didn't either. In the heat of this reality destroying glitch Jeff decided to go outside of the gym and look around. His school was mostly loaded in properly, but as he went to one of the edges of the school property he hadn't been thorough about near the edge things got more... less real. Like items were guessed at based on the light coming into the areas that were scanned, and as he hit the edge there was a notification that hit Jeff's mind.
"Out of Bounds, Would you like to exit the simulation?" Jeff then exited the simulation and looked at some options, and it seemed like if he wanted to get the gym working he'd need to somehow sneak into the girl's locker room to fill the area in.
Second test, Jeff entered the Bus on his way to school, paid his fare, and waited for the bus to go. It did but the simulation did an odd job on the traffic. They entered and left at the proper times, but Jeff could swear at the end of sight the cars simply just poofed out of existence. As the Bus hit the school Jeff figured it was time for him to get out of the simulation and just wondering if the changes he made to himself here would still be active in the outside world he... As Jeff thought of that he got an idea that it was an option he could toggle. He decided to keep it off for now just so if he had to get back to the real world quick he wouldn't have to explain why he may be a naked six titted fox furry hypothetically speaking.
Jeff saw the limitations of this program but then thought for a second about how he wanted to try to use it.