This is a custom TCP profile which optimizes TCP traffic for a Local Area Network environment by tuning the TCP stack.
Disabling bandwidth delay prevents LTM from attempting to calculate the optimal bandwidth to use to the client, based on throughput and round-trip time, without exceeding the available bandwidth. Nagle's Algorithm is useful for reducing the number of short segments on the network. (Neither is necessary for low-latency LAN traffic, and can introduce latency and overhead due to the required calculations.) The buffer and window sizes are optimized to maximize throughput/minimize latency.
(This profile is included as a standard profile in LTM 9.4.)