Do Apple products have different networking / wifi standards?
In general, no. Apple wifi works very well in my experience and we use it for analysis and measurement and production use. 

Have you done a wire shark dump when a specific computer has specific issues? 


https://www.adriangranados.com/apps/airtool


This developer makes awesome tools to support and manage wifi. You can start for free and then get the paid apps if you need to work out why you are seeing poor performance. Other than running software updates, you don’t need to worry about Apple hardware or drivers in general. Of course hardware can fail and os can need to be wiped and reinstalled, but categorical bad performance isn’t something I’ve seen reportedly professionally or documented anecdotally across the board.