On cross-border routes, the most common problems are not peak speed but stability during evening peak hours, a single exit getting flagged by the services you use, and client settings that lag behind route changes. Those three things are the difference between a connection that works and one that works every day.
The service carries most traffic over IEPL dedicated lines and relay routes, keeps several switchable routes in each region, and uses direct connections as a supplement. Registration needs only a username and password; subscriptions are billed monthly, data resets each month on your activation date, and mid-cycle upgrades are prorated by the remaining days.
If all you need is smooth 4K streaming and reliable access to AI tools, there is no need to study protocols or routing rules: install the client, import your subscription, and pick a route that is up.