Most timing problems start with the string and/or cables stretching and the bow specs keep changing. I would measure the string to start and see if it is longer than what the sticker calls for.
Fuse strings seem to stretch by the minute.
Not always so Sonny, they can be kind of a crap shoot. Some are good ones , others not so good. The one that came with my 737 was a crap one, the one on my Matrix, well it is still on there so it was a good one.The above is a load of crap, so spread it somewhere else. I've had FUSE strings since before they were called FUSE and have never had problems with string stretch or peep rotation and this with 15,000 to 18,000 shots per year.
50 arrows per day isn't all that much, alot yes, but string stretch usually goes so far and stops.