Why does YGO Omega use so much processor?!

you wouldn’t be mining some cryptocurrency in the background right!?

Screenshot your task manager. Let me actually see what you have because I can play the game live and show my cpu and ram usage is less than chrome.

I also am not sure if you have played any AAA game or unity game before. If you have played duel links or mtg arena or the upcoming master duel, the engine is the same which is unity.

As for cryptocurrency, just because you can’t handle a game do not blindly assume things when you have no knowledge. Do not accuse things without evidence either. If you know anything about cryptocurrency or Bitcoin miners there is a very easy way to find out if it does that and the standard windows defender will block that traffic and flag that program immediately.

I would advise you to do research on this using Google to understand how games and programs work.