Run a throughput test (iPerf3 is recommended) to ensure the link is performing at the expected capacity. Firmware 2.8.1 optimized TCP window handling for many users; you might actually see a performance bump compared to previous versions.
Anyone who has managed a fleet of radios knows the frustration of a sluggish interface. FW 281 optimized the backend processes, resulting in a snappier, more responsive web configuration interface. This may seem minor, but when you are configuring 50 links in a day, those saved seconds add up. mimosa c5c firmware 281 download work