This issue started roughly 3 months ago, about a month after I had my freon refilled because of a leak. Now whenever i come to a stop at a red light or im sitting in my car as its parked I have to turn the AC off or rev the engine to prevent my car from having a rough idle. Sometimes it wont be bad but most of the time as soon as I come to a stop my engine starts getting louder and my RPM starts fluctuating between 700 - 2000. If i keep it on long enough without reving my engine eventually it gets super loud and then the entire engine cuts out. This has happened several times at red lights and once in a drive through. Thankfully I'm able to start the car back up after a minute but it's really embarrassing and irritating when this happens. Thats why now I just turn off the AC whenever i come to a stop. Whats strange is so long as the engine is running at a higher RPM the AC runs without any issues. Freeway driving is actually fine with the AC on until I run into traffic. It's just irritating because I live in vegas and dont get off work until 3pm, the hotest part of the day. Ill be sitting in traffic in 110 degree heat chugging waters until I can get onto an open road again. If anyone has any idea what could be causing this please let me know. It would be greatly appreciated.