Do the generic scales of objects influence the grid snapping at all, meaning does every object need to be 512/512/512 for example or can it be some totally random scale? The box example worked by the way.
The grid in Unreal is a power of two, so your meshes must be for example 128 units long to easily snap in that grid. Since you work with a grid of 1 in Max you'd need to set the grid to 1 in Unreal also, which would greatly slow down your work flow. Also there is a possibility you got export scaling enabled or some other…
Yes you can have any scale you want. If you got X 256 Y something Z something then it would snap modularity on X but not on Y Z. For some meshes this is fine. It all depends on what you are doing. Combination = 32+64=96. It doesn't has to be 64 128 256 etc only. 108 for example is fine also. As it is 64+32+8+4 which is…