I've been puzzling over how to create a believable concrete floor, something about 1800 square feet like the floor of a warehouse/factory with scuffed lines of paint, worn areas and maybe even a frost crack or three.
More info: this is for an animation environment with characters who are about two feet in height, so the floor will be quite visible in a lot of the shots. I'm assuming the low-rez approach used for games will be too fuzzy looking, but I'm also hoping to keep render times down while maximizing detail as much as possible.
What I Know/Have Tried: I know image textures end up more believable than procedural textures, but in my attempts with 1024-square image textures a repeated pattern really stands out, taking away from the effect I'm looking for. But using large image textures sounds like a recipe for crashing Cycles when it inevitably runs out of RAM.
So what's the best, GPU RAM-friendly way to create this type of material/texture?