[MCPE-69401] Textures turn black when RTX is enabled

Solution to this problem found

Several users report that their problems with black textures (unless they were underwater or looking through glass) went away when they upgraded their video drivers. If you have the GeForce Experience app, that is probably the easiest and best way. Otherwise, look for the latest driver for your model on the Nvidia web site. (Do not rely on Windows to find the latest drivers; at the time of this writing, it doesn't.)

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All blocks textures turned completely black when RTX was turned on, although the rays of the sun are still visible.