Did you try it on your phone too? Maybe it has to do with internet connection, I live in a small village with not great connection so that could be the case here haha.
Haha no, I'm not playing these kinda games on my phone, but I can imagine a phone has slightly less processing power than a PC, so I can imagine it's lagging there indeed ;-) I don't think the Internet connection is the issues, as this is a locally played game as soon as it's downloaded, but there might be some online stuff happening on the background, don't know about that.