I am assuming you are going for impressive yet not outrageous lifts such as a 1.5 x bodyweight bench press, 2 x bodyweight squat, and 2.5 x bodyweight deadlift. I personal like the standards Casey Butt has set for what's impressive guys of average height and stature, say a lean but not shredded, 5'10", 190 to 200 pounder having a max bench in the low 300s, a max deadlift in the high 400s to low 500s, and a squat in the low to mid 400s. People with this strength and physique might not make it in the upper ranks of powerlifting, but anyone who looks and performs likes this looks VERY good!
That's one of the best series of articles by CT.
That's understandable, and I suspect this is happening because you are doing too much volume, partly by doing straight sets (perhaps death sets, but you didn't indicate this) for compound lifts.
You don't have to resort to an ultra low volume, Stuart McRobert hardgainer's approach. You can tackle this with better programming. I don't recommend ordinary naturals can handle more than four intense weight training sessions per week. On the other hand, if someone can't handle three or four difficult (not vomit and limp inducing that is) weight training sessions per week, then something else is going wrong.