Realm buggy and unreliable since 1.17 update

Different textured blocks are spawning in caves in my Realm that was created before 1.17 . I use the City Texture Pack and the Vanilla Minecraft pack overlaps with it , which creates an ugly and confusing mining environment . My Realm is also constantly kicking me out or is downright unplayable after updating to 1.17 . I have a strong Internet connection and performed all the basic troubleshooting steps with my console (XBOX ONE) and my wireless router . At this point the problems can only come from the game itself .