It's tough to air condition tent ends... , tough even in hardside campers. The mfr. website on the AC units, will tell you a temp difference from air inlet to air outlet is normally 17-22 degrees. Don't seem like a lot, does it? When it's hot(mid to upper 80s, low 90s) I have a heck of a time(2 hrs or better) to get to 76 degrees, much less see the AC unit cycling on and off... and that is with 2 fans on, vents and skylight blocked off with foam. There were some threads also on optimizing AC units, over the last couple weeks, that you might find of interest. Use search feature on the site.
2016 Flagstaff 27VRL Emerald
2014 GMC 2500HD CC 4X4 6.0L