Update from AMD:
We’ve identified an issue when compiling RT pipelines and have a developed a work around. The issue is causing stutter after loading into an area for sometimes 15 seconds or more (depending on CPU/etc), like the Mourningstar hub or any of the training levels in the Psykhanium, like Basic Training. This issue would affect 6000-9000 series cards. Users who fully disable ray tracing should not be affected by the issue and can do that to avoid the core issue if they don’t mind not using raytracing until a driver that contains the workaround is released.