17.4 Update - Total Ascent Too High

My friend and I have a 945LTE that's consistently recording total ascent 200-250' too high on 60min runs after updating to Garmin 17.4 software a few weeks ago. The runs normally have 350' ascent and the last 8 runs have recorded around 550'. I've cleaned the barometer hole, recalibrate altimeter and soft reset the watch.  Nothing helped.

It seems like a software bug...Anybody have a solution?