I am a newbie, and looking to understand the differences between GPS mode and AT&T mode. I prefer to use GPS as the control is so much smoother and stable and flight is easier, while ATT is looser and the quad tends to slide a lot more when maneuvering. I am not sure if I need to adjust any radio or NAZA settings, or if GPS should be night and day difference from ATT? Also heard that GPS is not a good idea to always use because loss of signal can cause a crash? Would appreciate any feedback!