Speed connectivity improvements with Sage 100c

My client's biggest headache is that he can't connect to his on-premise Sage 100 through their internal wi-fi or at home through a VPN.  It is so slow, it doesn't work. He wants to know if Sage 100c would make this connection possible? I told him I didn't think this version could do anything to improve that without upgrading the hardware and wiring in his office and home.  

Is that true?