Serious Performance Issues (latency/server response time)

[Raist]

The servers poll more than 3 times a second. More often than not the problem is network latency issues across the internet and not server side. Get your route to your server checked thoroughly---find the IP your client uses with Resource Monitor (resmon from search/run), run a trace to that address and submit it to your ISP's tier3 support for investigation. Would be a good idea to show a trace to another good service as well for comparison (another online game or a video service, etc). It is usually best to do this through your ISP's online contact options---phone support is typically entry level and won't be able to deal with this, and it can be an exercise in futility sometimes to get it escalated to a higher tier.

Can also do some testing with some VPN's during their free trial period (some even have a long-term free use policy, though it may be restricted use or locations). Try different tunnel destinations (sometimes the ones closest to Montreal aren't the best choice). If you can improve your stability/response times through a VPN, it is pretty much proof-positive there are issues along the route your ISP is assigning you. Routing issues like that fall under your ISP's responsibility to address and not SE---Square-Enix does not hold influence over your ISP's routing policies.