FPS drop over time with Vibrant Visuals on PS5 (Bedrock)

I'm playing Minecraft Bedrock on PlayStation 5 with the new Vibrant Visuals enabled. Performance is excellent when first entering a world (around 60 FPS), even with all graphics settings on Ultra. However, after about 10–15 minutes of gameplay, the FPS drop significantly, going down to 30 or even lower, regardless of resolution or graphics settings.

This happens even if I lower visual quality or turn off effects. Exiting and re-entering the world temporarily fixes the issue, which suggests some kind of memory buildup or rendering issue, possibly related to reflections or volumetric lighting.