Hey man, were you ever able to figure out what was the issue with your transmission? I think I might be experiencing a similar thing, not as bad as you but I feel like the shifting should be a lot smoother than what it is now. My car only has 2000 miles and I haven't really thought about it much but after taking my wife brand new 2023 CX5 for a drive that thing has buttery smooth shifting compare to my 2022 Mazda 3.