I tried different machines. My primary development machine is virtualized WinXP on dual processor 5520 quad code server. Then I tested also on other machines like i7 quadcore 16GB ram, ....
So equipment is not an issue. I also sniffed network traffic, and it goes to 100MB with few clicks.
I tried also with new copied database, without docs, and then I found out that if I delete all views, then it goes to normal behaviour, like if you start from blank database.