There are no limitation in the Home Edition other than the restricted IP count, and customization of notification pages (such as the web proxy blocked page) is disabled.
Do you mean that the tunnel is slow, or that it doesn't establish? If the tunnel is not established, it may be because you have NAT on one or both sides. If you still need help, disable debugging and show us about 60 lines from each IPsec log file representing a single connection attempt.