If you are trying to gain strength (and who isn't?) keep the warm-up reps to multiple sets of three.
135x3 155x3 180x3 200x3 210x5x5 or higher
try for 4 weeks adding 5 lbs each week then switch to a similar warm-up but do 3x3 instead of 5x5 for a decrease in volume with an increase in intensity for another 4 weeks, then start over with 5x5 at higher weights than the first "cycle" of 5x5.
You can't jump from a single 135 warm up set to a 205 work out. You'll have to give the muscles and CNS time to adapt to the weight.
I start out with an empty bar. So people look at me, let them.
12 reps with an empty bar: 40 immediatly put on extra weight and do 9 reps with 80 immidiatly 6 reps with 120 ... then sets of 3 reps to move up to your workout weight, gradually increasing the weight so the muscle and CNS has time to get accustomed to the weight. Take a bit more time to put the extra weight on. 10-15 more seconds. ... finally, the workout sets.
In short, the workout you just described is more like a warmup series.
This may work for you, but it certainly is not that necessary to complete this amount of warmup sets.
2-3 sets at lower weights, not taken near fatigue--ie 135x8..225x5..go into workout.
For warmup, 5-15 cardio, then 5 min various light shoulder work. Just light front,side,rear lateral lifts works for me. Sometimes I like to do overhead squats with the bar just to get the body going. But back to the original, I don't feel like you have to make 20 or more warmup lifts for CNS or any other purpose.
Thanks for the advice everyone. I think my problem is the weight jump and my endurance, also there may be the possibility that I'm getting ahead of myself poundage wise. I was resting only 60 seconds between sets, should I increase this?
I've noticed that compared to most other people I work with it takes me longer to get the "pump" in my muscles. I tried changing my warmup to 135 for 10 then 170 for 10 and then my work sets. For the second set with 170 the last one or two is hard to get up so i know i'm doing some work, but I really don't feel warmed up until after I do the 170 set. I'm going to try doing a couple sprints pre-workout.
I do 5 minutes of cardio, then do my warmup series. Total warmup time, including the cardio is 10-12 minutes. I only do I warmup series for the entire workout. For my next muscle group, I do less warmup during the pauze between workout sets of the previous muscle group.