When actually playing: around 1992/93 when I still used a pick and played METAL, lol.
During setup: 3 times the last couple of weeks thanks to the useless new fluted tuning machines on the Fender American Professional series. It's the G-string that breaks, again and again. Unless you leave enough string length to fill the entire tuning post those fluted shafts will pull the string downwards and create far too much tension at the angle where the string goes into the tuning post. Seriously, if you need to fill up the tuning post with windings to avoid breaking the string, WHAT'S THE POINT??? Useless piece of junk. This is just Fender trying to fix a problem that isn't really there. If they had simply installed a string tree for the A-string the whole issue about tension over the nut would be non-existent.
Strings where the total uncut length of the G-string won't give you more than 2-3 windings on the tuning posts (like TI Superalloys) simply can't be trusted with these new fluted Fender tuning machines. I broke three Superalloy G-strings during setup and then just gave up.
So thanks Fender for ruining three sets of Superalloys with your useless and completely unneccessary "innovations". It's a shame really, because I absolutely love the sound of Superalloys + the V-mod pickup.