I don’t know squat…but you’re attempting a PR? -of course you’re going to “stall” there, the weight’s (too) heavy.
Check this guy out, he’s got great form, fantastic #s, and “stalls” at the same spot you do…except he grinds through it because he’s a very, very good powerlifter:
Like I said, I don’t know squat, but your bar path looks like it’s straight up and down, I don’t know why you think you’re doing anything “wrong”.