I’ve fired probably 3,000 rounds of 147 grain AE over the past year through a variety of platforms including but not limited to MPX, MKE, G17, G19, P226, VP9 without problems. Like you, I use it to replicate the 147 grain HST.
The malfunction was consistent in that the bullet was wedged between the feed ramp and breech face each time; easily cleared by racking the slide. It occurred with all 5 magazines at a rate of about 1-2 times per mag. Shooting faster dramatically increased the frequency with one magazine (the last one before I quit).
Anyway, I just bought 150 rounds of 124 grain Blazer Brass that I plan to take to the range with 50 rounds of HST. Any hiccups and it’s going back to Wilson.