Today we planned and installed a point to point link.
It is only a short one, but from the planning stage, we wanted stability over speed, so only went with 40Mhz channel width, which would reduce throughput from 600Mbps+ down to 300Mbps. This speed would be ample for the required application.
Upon installation, we hit the expected speeds with only minor tweaks. A consistent 300Mbps capacity up/down over the link.