I have also noticed that if I completely delete page 5 on event 1, the event will loop back to page one of event 1. I am not sure why that is happening though.
Autoruns will always loop, that's why you have to switch them off.
Your games event logic is rather complex, you better try to simplify this before continuing looking for the cause of the problems.
The best way to do a cutscene is to have ONE controlling event for the entire cutscene - that way you don't need as much switches, and you don't run the risk of a mixup in switches like you do at the moment.
You need three events for your scene - the controlling event that has no picture, and two events for the two NPCs that are basically empty placeholders for nothing but the pictures.
The controlling event will have one page that contains all the commands from page 1 to 4 of the event ID 1. you can remove all self-switches from those sequences that way.
Whenever you want to move one of the NPCs or switch the pictures of that NPC, you use the set moveroute command with the command target changed to the event that is supposed to be moved (the drop-down list top left of move route command contains all events on the map, that's where you select what to move).
Change the events in that way, and you'll see that everything will become much easier.
If you still have problems after that, come back here with the new event pages and we'll look for the remaining bugs.