Vegan Bodybuilding & Fitness

I'm on week two of stronglifts 5x5 and no where near stalling yet, but was curious when I should have a deload week? I've read it should be after 4-5 weeks regardless if I'm stalling or still going great guns, or should I deload each lift as and when it becomes difficult, or all at the same time?

Only deload when you need to, that is when you have stalled on a lift for three consecutive workouts. Only deload on the lift that you have stalled on, and then only by 10%. Follow the program to the letter, it works!