Runtime virtual texture sets landscape to lower mip

Development Rendering
30

It can help to tweak [/Script/Engine.VirtualTexturePoolConfig] Values in BaseEngine.ini
my values, stoped flickering still has slow update from time to time:

DefaultSizeInMegabyte=128
+Pools=(SizeInMegabyte=256, MinTileSize=0, MaxTileSize=9999, Formats=(PF_DXT1, PF_DXT5))
+Pools=(SizeInMegabyte=512, MinTileSize=0, MaxTileSize=9999, Formats=(PF_A32B32G32R32F))