I send only SOAP 1.2 over HTTP, local on my computer (windows 7 x64).
Both versions of Soap UI are x64. I reinstalled 4.6.2 and it is the same.
I send both with test suites and without them.
It's from 100 to 1000 times slower when I'm running testcase and about 1000 times slower when submiting request (5 ms to 5000 ms).
Actually when I create test suite in 4.6.2 I need to wait few seconds to create it, and in 4.6 it is created right away.
So it's not just with sending, it's about application processing I would say.
