Excessive RVT page updates with Nanite and ClearCoat or Cloth shading model applied

There is an excessive number of page updates when a Nanite landscape has a runtime virtual texture material applied to it with a shading model set to ClearCoat or Cloth (instead of Default Lit). The RVT does not reach a stable state (even when the camera remains stationary) and continuously keeps swapping out lower resolution mips for higher resolution ones.

Attached to EPS case is a video and repro project.

• Create a new blank project with starter content
• From the main menu, in the Project Settings under the Engine > Rendering > Virtual Textures category, set Enable virtual texture support to true and restart
• Remove the floor/landscape (select all the landscape proxies and hit Delete, then delete the Landscape container)
• Activate Landscape mode, leave the default settings and click "Create" to create a new landscape. Revert back to Selection Mode
• Select the Landscape in the Outliner and check "Enable Nanite" in the details. Click "Build Data"
• Add a Runtime Virtual Texture Volume to the scene.
• In the Content Drawer, create a Runtime Virtual Texture from the Textures category (leave the default settings)
• In the details of the RVT volume, set the Location to X: -25250.0 Y: -25250 Z: -2000 and Scale to X: 50500.0 Y: 50500.0 Z: 5000.0 (so the volume fully bounds the landscape)

• Create a material for the RVT and open it
• On the Material node, in the Details, check "Use Material Attributes" and "Used with Nanite"
• add a "SetMaterialAttributes" node and add two Material Attributes (by clicking the + symbol next to Attribute Set Types). Expand the Attribute Set Types section, set the first attribute to "BaseColor" and the second to "ClearCoat". Plug its output into the main material's "Material Attributes" input
• add a "RuntimeVirtualTextureSample" node and set the Virtual Texture to the one created before and Virtual texture content to "Base Color, Normal, Roughness, Specular". Plug its Base Color output into the Base Color input on the SetMaterialAttributes node
• add a scalar parameter node and plug it into the Custom Data 0 input on the SetMaterialAttributes node

• create Runtime Virtual Texture Output node
• create a TextureSample node, select the T_Ground_Grass_D texture from the starter content and plug its RGB output into the BaseColor input on the RVT Output node
• Create LandscapeLayerCoords node and set its Mapping Scale to 1.0
• Create a scalar parameter node and set it to 50.0
• Create a Divide node, plug the Landscape Coords node in input A and scalar param node in input B. Plug the Divide node's output into the UVs input of the texture sample node
• Apply and Save the material
• On the RVT volume, under the Runtime Virtual Texture, set the Virtual Texture to the RVT texture asset created before.
• On the Landscape, under "Landscape Material", select the RVT material.
• On the Landscape, under Virtual Texture, click the + symbol next to "Draw in Virtual Textures" once and select the RVT texture created before in the texture slot

• place the camera somewhere relatively close to the landscape's surface, looking at the horizon
• in the console, enter "stat virtualtexturing" and observe the number of pages being updated
• open the RVT material again and change the shading model on the main material node from Default Lit to Cloth or ClearCoat (both show the same bug). Click Apply and Save the material.
• Observe the number of page updates going up considerably and does not reach a steady state (tiles constantly switch between mips)

• the number of tile being updated reverts back to normal when using either a Default Lit shading model or when using a ClearCoat model without using Nanite for the landscape or when the scalar parameter plugged into the SetMaterialAttributes node is unplugged