It does it every time a model is imported. Bakery stores additional hints for the unwrapper in the meta file, and ftModelPostProcessor script applies them at the same time. I'm not sure at which point it went wrong in your project, as your github repo contained a different error (missing references, lightmaps aren't applied). If you can share any lightmaps-are-applied-but-uvs-are-wrong scene, I can investigate it. Try using "Dominant direction" mode. "Baked normal maps" won't give you enough detail in this case. I'm not sure, probably not. I can debug any problematic mesh if you can send it. That is surely possible, but I guess I'll leave it for now, it's been too long since the last release Will continue working on HDRP integration after that. One thing that bothers me is that HDRP is still in preview and it's ever-evolving. Investing time in preview features may be a waste of time if they suddenly redesign some system later (and they are doing it all the time). But if it'll become obvious some features are set in stone and their interface is final, I'll spend more time on that. Sorry, I'm not sure I understand what you say. Maybe post some screenshots? Driver crash. Probably execution took too much and TDR kicked it. You can try disabling it, but I would not. Instead, I recommend following the same guidelines as with any "out of mem" problems: https://forum.unity.com/threads/bakery-gpu-lightmapper-v1-55-released.536008/page-59#post-4579486 Basically try lowering texels per unit and skylight/GI sample counts.