Both have their own impacts. Charging in Range Mode and Performance mode will fill the Battery to a 100% Charge. LiPos Don't like to be fully charged fully, especially just sitting there and then on a very hot day you're asking for it to be very unhappy. Their sweet spot is 50% SOC and anywhere from 50%-80% is good for the roadster hence why charging in Standard Mode is the best habit to have when charging. When you drive in Performance Mode your pulling lots of AMPs which can deteriorate and weaken the battery cells if you make a habit out of it. Standard mode and Range mode driving prevent you from pulling from these AMPs from the pack that you have access in performance mode.