Throughput – Difference Between Goodput, Throughput, and Data Rate

I think I might have found the reason, but I am not sure. Any feedback will be welcome.

why does some previously unable-to-reach-cap cases could now reach the cap?

The problem is the switch's buffer size.

• In scenario 1 (link A has 2X delay), the real bottleneck situation is 2X delay with K buffer size.
• In scenario 2 (link A&b both have X delay), the real bottleneck situation is X delay with K buffer size.

Since this are lossless links, once I crank the buffer size up every case seems to be able to reach network ceiling.

Would the furthest client see a dip in its RSSI? Would this be more drastic if the density of clients moved even closer to the AP?

The position of other clients has no influence on the received signal strength indicator unless they are attenuating the signal by obstructing it etc. and therefore causing the client to receive a weaker signal.

Does the throughput/transmit rate (not bandwidth) of the furthest client drop as the number of clients increases? If so, is this impacted more severely as the density of clients moves closer towards the AP?

The Tx rate of a client may drop if the signal to noise ratio is degraded, or if airtime consumption increases. A high density of clients moving closer to the AP may improve performance since they may make more effective use of the airtime, by utilising more efficient modulation at higher data rates.