I didn't have lag...or if I did it wasn't enough that bothered me (I wasn't trying to compare it to anything), but I was having some other little issues, such as my custom ringtone wouldn't "stick". I finally did a FDR and just redid it from scratch (I had used Smart Switch to go from Galaxy S7 to Note 7). Now my ringtone sticks no problem...any little things that were bugging me are gone. I know it sucks to do it this way, but if you have ANYTHING customized, honestly it really is the best way to ensure things work as well as they possibly can.