Resolution:
We do not recommend to change the MTU size for the following two reasons.

1. In the past, TCP/IP stacks were very uneven in terms of performance.  IP reassembly, in particular, was a source of concern.  So, Rendezvous was designed to avoid IP reassembly.  This is a core feature of Rendezvous.

2. RV is optimized to achieve maximal performance at the standard Ethernet MTU size.  If the MTU size has been increased beyond that of the Ethernet MTU (which can be done), we will not make optimal use of that increased MTU size.  We have kept the design that way to avoid breaking (potentially) backward compatibility.