I'm looking at performance's problem that we had since some days on 8800 and 8900 in version 10.2.1 and 10.2.0 (with an HotFix) on some standard VS
Standard HTTP VS seems to slow down TCP connec...
Any IPsec involved as well? If so, it might be worth dropping the VLAN MTU to prevent fragmentation occurring elsewhere in the network and introducing latency.