Tow weight

I went from a pop up to a TT, my 1500 had a towing capacity listed around 10,000. The v8 5.6 ? votex with max towing package. The rpms on long trips were loud and i couldn't tow over 60 , 65 max. This leads to trucks passing you at 75 and sucking in the trailor. I upgraded the suspention and tires. But after taking it to disney i got a 2500 gasser. It was not fun trip.For small jaunts on flat surfaces you may be ok. But , my truck could tow it, it just wasnt a pleasant ride. I want no stress trips. They list the towing at optimal conditions , sort of like gas mileage. Its never at the numbers they list.