Use N64 artstyle in prompt.
The 100 epochs 218MB XL version I followed AI_Characters's guide on LoRA settings but used a total of 106 images as well as my own artstyle regulation images.
The smaller 20 epochs 7MB version was done with experimental settings. Its small size it why it call it a SDSX LoRA.
Inspired partially by both veryVANYA's outstanding PS1 LoRA (you should download and try) and my 90's childhood.