How do I optimize loads of quads generated as a Tile map for my procedurally generated tileSet?

So I tried to combine them into a mesh using CombineInstance[] combine1 = new CombineInstance[capacidad]; but it will give me the error that the mesh has too many vertices, as I have 60000 quads. I tried to combine it in several meshes but then I keep getting index errors any easy way of doing this? now my fps are ok but as soon as I zoom out a bit with my camera the amount of batches get to around 1000 thank you for you help! edit: ok Im going to try to create an array of textures pack them and the aply them to a plane , but unity freezes... Texture2D texturasCombinadas=new Texture2D(2410,2410); Rect[]rectangulos = texturasCombinadas.PackTextures (texturasPlaneta, 0, 2410); planoParaTexturas.GetComponent ().material.mainTexture = texturasCombinadas;