Sure, use blocks. 64x64 is just the maximum block size. 64x64 is about the top limit for a 6 layer vertex alpha mesh terrain block in B3D without some serious compatability errors with many older cards. If the terrains are pointy its because the resolution is too low, you can also use the smooth tool to average an area to make it less pointy.
For example try:
File > new > 32x32 multi terrain > 16x16 blocks. (16 block limit will be removed in later versions)
This will give you a 512x512 terrain in managable blocks. Obviously double that using 64x64 (if your machine can handle it)
Personally i reccommend using 32x32 blocks rather than 64x64 as they are faster and more dynamic (you can hide and show them more easily)
When exporting, you can choose to have these blocks as separate mesh files or as children in a single hierachical 3D model (that can then be loaded with B3D's "LoadAnimMesh()")
For example try:
File > new > 32x32 multi terrain > 16x16 blocks. (16 block limit will be removed in later versions)
This will give you a 512x512 terrain in managable blocks. Obviously double that using 64x64 (if your machine can handle it)
Personally i reccommend using 32x32 blocks rather than 64x64 as they are faster and more dynamic (you can hide and show them more easily)
When exporting, you can choose to have these blocks as separate mesh files or as children in a single hierachical 3D model (that can then be loaded with B3D's "LoadAnimMesh()")