Here's a list of what my wallet on my desktop is connected to so try adding these to your instantcoin.conf file and see if it improves.

addnode=207.29.221.125
addnode=207.29.218.6
addnode=207.68.220.150
addnode=195.12.60.154
addnode=67.230.217.242
addnode=92.222.8.163
addnode=76.219.197.62
addnode=71.89.21.18