Apparently I'm a slow CCA

I'm 4 months in passed my probation, everytime I do a full walking route or a bunch of apartments i cannot finish the routes, other CCA'S always have to help me and management gets pissed at me. The regular for the ful walking route the guy is really heavy idk how the fk he gets it done by 5pm , I'm a really fit guy that jogs every night so I'm a fast walker I just don't understand how this is possible. I've done that route 4 times already and I just can't finish it. I also struggle at apartments I hate them so much only because it's difficult finding the NBU's and taking packages to people's apartments and figuring out where there unit number is. Tonight for instance I took two pivots, both walking routes with coverage and ads so I Already knew that was gonna slow me down because coverages and ads always slow me down. My supervisor said both pivots should take two hours ..it turned into 4 hours with a regular helping me. Got yelled at when I got back and I tried explaining to him there's no way in fk I could finish them on time because of the coverages. Had to tell him I have to put both the coverage, ads and case mail in my satchel it's a real pain to carry everything. I know we're suppose to have the case mail and dps in our hands while we're walking but the case mail was bulky so it stayed in the satchel. So pretty much every route I've been on I somehow can't complete on time it's pissing me off.