HERE: worked a like a charm, go in ur NVIDIA panel( by clicking right mouse) then go show more options, then go into the panel then u find 3d settings after that go to program settings since its the first time u are proabaly doing this click add then go find the lego batman file then you go limit the frames on the game bc im going to assume u have a recent pc that is giving 1k frames on the game thats the problem for u so u set it to 60 frames limit and also u can find the v sync setting while u finding the frame limiter and turn that on. people also say that can work but for me it was the frames limit thing to 60 that is having this game run smooth dont forget this game is old and it doesnt need max frames ahahah it wasn't made for that ahah