I really think the time needs to be lowered, I know of quite a few people that use and abuse this trick/glitch at the moment, and I for one see it has a huge problem/glitch as its totally unfair as hardly anyone knows about it and it totally bypasses the giant concrete walls on the map which are meant to limit the way into the base to only the main entrance.
If the time was lowered I think that would fix it I mean you get a loud sound, flashing screen, and text in middle saying you are out of bounds, if players can see or realise that they are in the wrong place after 5 seconds they deserve to be killed/blown up tbh.