It takes too long when moving to a small meeting room.

It takes too long when moving to a small meeting room.

I use a small meeting room a lot. When I am placed in the small meeting room, it takes too long, it takes almost a minute, it doesn't seem to be a matter of communication. When the family used together, it takes so long on my computer.It was not a problem until 2 weeks ago, but this phenomenon suddenly occurs from one day. Is there a kind of program and likely?