High latency using Point-to-site VPN in Japan West region

Hi,

I created a Point-to-site VPN in Japan West region, but I am experiencing very high latency (>500ms) for the internal connection.

RDP to the VM (same region) using the public IP is quite fast, but using RDP with the internal IP is very slow.

Also HTTPS connection from the VM back to the on-premise Web server is very slow due to the high latency, I think.

I this expected? What is the expected latency between a VM and VNet in Japan West region and on-premise network in downtown Tokyo? The on-premise internet connection speed is 100MBit up and down.

Thank you in advance.

Regards,

Enrico