Looks like your antenna is not well aligned.......if you go for Kiwisat, the satellite has a better footprint and an average technician will do the trick. When in fringe the best thing to do is align a single antenna to each satellite, sharing the antennas surface (gain) is for people very close to the main EIRP, the deeper you are in fringe the more you'll need the full antenna's gain in order to achieve stable signal levels....
I personally would only consider moving to the next option after exhausting all possibilities with my current hardware, unless you are done with your tech guy, that's different scenario.
I have heard from friends I have in the Caribbean that the picture quality of Kiwisat is great, but they take some time fixing channels that sporadically stay in a loop or freeze, I would say their operation is much more smaller than AT&T & Dish, so they probably won't have a so "big" (large) tech team behind their core operation......
Most content providers have their main feed now days over stream, larger ones will have a redundancy on satellite, but the ironical thing is that the content provider (Tuner, ViacomCBS, etc.) compresses, encrypts and transmits via satellite or terrestrial fiber, the provider (Dish or AT&T) will decrypt, digitalize, compress, encrypt again, and transmit, then the end user's receiver will do all the process again.....as you can see the operation needs a team of people monitoring this in all the channels they broadcast.....