Is this a common occurrence of something? My ac started to get funky this summer slowly little by little and now it only blows cold when I reach 75mph you can actually hear and feel something “engage” idk what. And then maintaining that speed you’re good, drop below that and reverts back to blowing hot. Sometimes on initial startup it’ll blow cold briefly but most of the time now it begins to blow hot until you can reach those speeds again.

Most likely what is this? Car is a 2018 Nissan Versa with 260,000 miles.