After giving up on this, I saw some new firmware updates for my RT-AC68U and pulled it out of the closet. It appears this problem is fixed. On the latest Asus firmware and have not had a single drop connection in a few weeks.
Found this forum because this is happening to my RT-AC68U, I ran the code mentioned in a earlier post and some logs show but they never update, it just shows from the day I ran the code.
Any more info on fixing this?