I don’t have this wifi card, but I think this is a plausible work-around because …
Back in 2010/2011 I worked for an enterprise wifi vendor, and one of the many strange bugs we dealt with was with a series of dell laptops with intel wifi cards. With other vendors APs it would work indefinitely, with ours it would drop-out after 15 minutes. After much debugging and testing, it turned out that having our AP wifi driver limit the AMSDU / AMPDU (just for the MAC address range used by this line of dell/intel wifi cards) fixed the issue. We speculated that if the wifi traffic to these cards was “too fast” it would … overheat some bit inside? cause some firmware internal index to wrap-around too soon?