Ambient temperature effect on refer interior temp

With 107 temp you mentioned that's asking a lot for an rv unit. I've often thought my dometic was not working properly when in 100-105 degree temp and my unit was maybe 58-60*. I tried an exterior fan. It only helped a little. It doesn't help when my kids open it once or so an hour. Whenever it's lower then about 85*outside the frig works fine, 37-40*. 107* is just too hot for an rv frig in my opinion.