Poor fuel economy and constant active regen dd15 gen 5

Is anybody else having issues with their Gen. 5DD15 ? I had a 2021 Cascadia with the DD15I drove the hell out of that thing pedal to the metal all the time it was governed at 65 And the worst fuel mileage I got from that thing was 8 and a 1/2 the best was the best was almost 10 miles per gallon loaded. And it never once did an active regen. I currently have a 2022 cascadia With the Gen. 5DD15. Driving itThe same way I drove my previous truck and I'm getting low 7 loaded and 9 -10 bt/empty. I have to baby this thing in order to get 8 miles per gallon that includes driving about 55 miles an hour. And this ####ing truck constantly does active regions every couple 100 miles I do not idle other than for a couple minutes 1st thing in the morning. Also the DEF consumption is about twice what it was in my previous track current currently I get about 2500 miles Max out of a tank at DEF and my previous truck I could get about 4500 miles.
Just wondering if anybody else is having any similar issues with the Gen. 5DD15