To update you on the situation described here , our dev team has been hard at work investigating this issue and working towards a resolution. Thanks to the files and troubleshooting reports you have provided, we have since discovered two major causes of the problem: Some users utilizing Updated Dynamic Lighting are running into a bug with WebGL, a framework we use in our Updated Dynamic Lighting system. This bug is being worked on - if you are running into the issue and want to use Dynamic Lighting in your games, we recommend using the Legacy Dynamic Lighting system instead until this bug is fixed. Our Content Delivery Network (CDN) is handling file-caching improperly. We are working with the service provider directly to make sure this gets addressed as soon as possible. We will be providing updates as we make progress on these issues. Thank you for your continued patience and understanding!