The textures of the maps do not load

the textures of the maps do not load 1. the floor of the map is black or transparent 2. only see the champions, subjects, monsters of the jungle, the river, turrets, particles of light, shop, inhibitors and the nexus. 3. my screenshots only appear in black. 4. I tried to repair it from the client PBE but it did not work, just disable queuing for the games pvp and cop vs ia and the training. 5. reinstall but the problem persists in the textures, however it already enables queuing in pvp, cop vs ia and training. 6. I thought it was my computer but the main server works at 100% perfection 7. these events appeared on the PBE server with the installation of the v8.20 patch
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