When using 3D training data (be it video games or CGI animation), you should tag all the applicable data "3D". That will stop the "style" from bleeding into everything. Same idea is usable to isolate a few other styles as well.
I've got an article on the concept.
https://civitai.com/articles/11814/style-capture-use-3dpolygonal-images-in-your-lora-with-this-one-simple-trick