Peering is actually a complex issue. The ISP you're currently using might not have a good peering with your data center operator.
One way to force a different peering is by complaining to your ISP. Include the server's IP address in the complain, and their sysadmin might take a look and alter their routing table so traffics going to your data center will go through different route (assuming the ISP is not shitty and have multiple high quality peering AND actually looking at your support request).
Another way is by using a VPN. By using a VPN, you'll bypass your ISP's network routing. Your traffic will go through your VPN provider's data center instead, which have completely different peering partners than your ISP. Try connecting to different country (e.g. Singapore, Hong Kong, Japan, Europe) to see which one is the fastest. For example, your ISP might have a good peering to Hong Kong, so by connecting to a Hong Kong VPN server, you'll bypass your ISP's shitty peering to Europe.
Finger cross though. In general, connection between this part of Asia and Europe is not great because there is no direct route. Connection to US is a lot faster in comparison because there are many direct undersea fiber optics links.