How often do you change your string?
As often as it gets too worn, so that really depends on the string. Not just material but also weave plays a big part in how quickly a string frays. Dirty or frayed strings can also make the bearing dirty so at some point it’s less hassle to just swap it out because cleaning bearings is kinda a pain.
Haven’t changed mine in a year, been considering to do so.
Every 4-5 hours of playtime, depending on how hard I play that day.