I always do full ROM and i only notice the issue when I'm lifting my max. Usually on the last 2 set of my bench press. Here is my log for bench press:
Warm up: 12 reps - 110 lbs (including the bar)
Set 1: 12 reps - 110 lbs
Set 2: 12 reps - 120 lbs
Set 3: 12 reps - 120 lbs
Set 4: 12 reps - 130 lbs
Set 5: 12 reps - 130 lbs
Set 6: 10 reps - 140 lbs
Set 7: 10 reps - 150 lbs
I feel the gap on set 6 and 7. My weight is: 144lbs.
That's a lot of volume before your strength set. For training strength, that would be less than optimal since you're fatiquing your muscle before the weight gets heavy. As a size building workout, it may still be less than optimal as you would do better to train heavier earlier and then reduce weight as you fatique.
Normally ramping the weight is done with fewer reps to avoid fatique, more a warmup/acclimatation. 3-5 reps is enough. Then your top set will be stronger. Once that set is over, you can reduce weight and add volume sets. I think you would have better results both from a strength and size point of view.