played around a bunch more editing, copy pasting, renaming, turning Kemper on/off as well as rig manager. Mine is working great.
Maybe try a new USB cable? Or a different USB input on your computer if you have one. You are not going through a USB hub or anything?
No hub. USB cable straight from my iMac to the Stage.....but just tested and when re-naming the Performance, now it changes on the Stage as well.