Connectivity Issues When Heated on Wifi Chip?

I’m using a BPI-M2 Zero, which I believe has an AP6212 network chip in it. I start getting Wifi connectivity issues at a temperature of around 140F. Is that normal? Is there any way of working around it? My usage has the BPI in an engine compartment, so it will probably get even toastier. The specs of the AP6212, if I remember correctly, list it as not wanting more than 160F. However, I’m getting intermittent cutouts long before that.