I am playing the Chinese version of "KartRider" in Greece, and the PC game has high latency. Can the game accelerator solve the latency problem when I return to China?

Overseas Chinese, students and business travelers often miss the domestic PC games that they can only play in China when they are in a foreign country. Just like players in Greece, when they try to log in to the domestic version of "KartRider", various problems come one after another. What exactly causes the high delay of the game? Is it the local network in Greece...