First, i apologize for my poor english.
I updated floating license of our lab server and It works very well.
But compare to the time when i used a student's license on my computer, it is too slow to open ModelSim.
When i used student's license, it took several seconds to open. But after i use floating license, it takes about a minute.
Is it normal? Lab server is close to our lab, so i think network isn't problem.