On mine:
Start IP address is the same (192.168.1.100)
Max # users:100
IP address range is 192.168.1.100 to 192.168.1.199
Lease time is 1440 minutes
To your first question. On our old router, my husband's Ipad and iphone kept getting dropped. My ipad, phone and PC never did. But if I unplugged the router power button in back of the router, his devices always came back up. Because of his devices, we bought this new router. First hour or so, after setup, everything was perfect. Then it started dropping all of our devices as well as the connection on my PC. This was the 1st time my PC network was ever affected. That's why I spent several hours with a Linksys tech on the phone. So I plugged my modem directly into the PC tower for a day and had no drops. If you don't mind, I'd like to go through what cords/cables are connected between the devices, in my next reply to you, because so far there have been no drops today. Thanks.