@Waurelius If you need another project to test you can download the one in my signature. It has quite a bit of hitching on my system (8700k & gtx 1080) but doesn’t always happen right away, you might need to make changes to the world such as adjusting some values on BP_Ocean and moving things around, or switching between PIE and editor a few times. Not sure what triggers the hitching, but it will start after using the project for a bit. Don’t have a 4.20 version on GitHub yet but can add a new branch if needed.