Sometimes you can just reset your server, have a few guys join in - and BAM it will be full within minutes. What I have noticed, is that (obviously) it is a lot harder to fill a 64 slot server. I've had great success toning my server down to 32 slots and keeping it at basically 100% capacity for long periods of time, but the minute I decide "hey maybe Ill try it with 64!" the server basically dies out and becomes a barren wasteland!
I think, to be honest, a 64 slot server is overkill for the average community on the rise for BF3 - My clan/community took the route of going big on launch, but we feel that we are better off with 2 - 32 slot servers. Im sure once people start to get regulars on their servers, you could see 64 players filling up no problem.
It's a shame I can't downgrade my 1 64 slot, to 2 32 slots though
