As is usually the case, there are many ways to achieve the same thing in Max. Here is another way that might be better.
What you might want to try is the 'Tiles' map. It will give you interactive control over your tiles instead of using fixed maps like you have and it might solve your issue. Also, you put it on a flat plane and don't have to physically model the tiles. This gives you a much lower poly count.
Right click a clear area in the Slate Material Editor and go to Maps/General/Tiles.
1. Put a texture in the maps 'Tiles' input and set a color or use a texture for the 'Grout' input.
2. In 'Standard Contorls' pick 'Stack Bond' for example, or something else.
3. Set the 'Horiz. Count' and 'Vert. Count' in the 'Advanced Contorls' to whatever you'd like. If you double click the image icon of the Tile map node and expand it, you can see an overlay of the tiles you are making.
4. Shift+Click and drag the Tile map down to clone it. Change the 'Texture' to pure white and the 'Grout' to pure black.
5. Wire this node into the 'Bump' slot of the material.
6. Go to the bottom of the 'Material' node and find the 'Bump' parameter and adjust the value to something you like.
Rob Holmes

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3ds Max (2025-2027), V-Ray 7, Ryzen 9 9950X3D Processor, DDR5 128MB, Gigabyte Aorus X870E Master motherboard, Sabrent Rocket NVMe Gen5 M.2 drives, NVidia RTX 4090, Space Pilot Pro, Windows 11 Pro x64, Tri-Monitor, Cintiq 13HD, Windows 11 x64
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