I have to wonder what some of you do to the phone

mine holds upto multitasking, etc. fine - 4G maxes out whatever is available and wifi performance is good, though admittedly a touch behind the top tier mobile/tablet devices for wifi performance but only talking single digit percent difference.
EDIT: Hmm having a quick google shows some rather mixed wifi performance benchmarks for the phone - some have it way out in front of almost all other comparable devices while others struggled to get past 20Mbit with their handset - wonder if there are issues with certain firmwares or something.