I started doing 5x5 a little under a year ago; saw pretty regular gains for about 6 months, I was around:
Max bodyweight was 225 (I'm 6'1"). Around November I cut my calorie intake a ton (probably by about 50%), at which case I stopped increasing weights for 5x5, but kept doing the routine (with goal to more or less maintain weight and improve form). I actually deloaded as well to work more on form. A month or two ago I switched my squat workout to light-weight speed squats instead of heavy squats (also sometimes box squats, etc.). Right now I'm at
Squat: Warmup to 1x5 @ 275 then 3x10 or 5x5 speed sets @135.
I also start with jumps/plyo type stuff. I actually further deloaded bench press because when I go towards my upper limit, the shoulder muscles on my right arm seem to dominate and the pec on that side isn't really getting worked correctly, and also leads to pain in my arm.
I find it weird that a lot of people can deadlift more than they squat, but for me squatting is much easier. It could just be because I've done it a lot more, so my body is more used to the motion.