It seems like in bot games people are playing with multiple accounts at one time, making the game length longer. I don't know if they have it scripted or not. If you haven't noticed this, pay attention when no one speaks in the game and they are dying a lot you will see one person go in and dps, then die or fall back then the other go in and do the same. They also have their power damage champs just auto attack so if you see that it's a dead give away when you know the cd times. Another note they try to keep these account in close lanes, such as 2 top 1 mid or 2 bot 1 mid. I am sure I am right and it is annoying trying to grind credit with a person such as this.
I think bot games should be put on hold until this is fixed, I don't mind playing with new players I mind playing with t.o.s violators and to the ends of why they do this they are.