We have a uv tiling limit in our game like many other games if you tile a texture outside of this range your texture smears. Our game supports -64 to +64 as far as I know. Anyone got a script that cuts up long uv's that have subdivision in them and then stacks them appropriately so there are no seams. We had this tool in max on nfs undercover it was one click magic and never fucked up your uv's