Funny thing is my car does same exact thing and I've replaced everything from tps, mafs , plugs and wires ect.
My car has to run like op said for only a min or two and then accelerates fine. But that 1st min I won't attempt to drive it as I don't wanna damage anything.
Im thinking it has something to do with the tune. My car doesn't throw any check engine codes .
If you find the issue lmk and like wise.
Im also 100% shur my plugs,wires coilpacks and vacuum is all good.
Could it be the ecu adjusting its self by chance and after the 1st min or so to fully properly adjust?