nice setup for wood fracture
I did some optimizations for your scene,see the marked nodes
for the rbdcluster node,you should check off the "fuse clustered pieces" since you have to make collision shape of each piece separately in dop,and so you should keep the original "name" attrib after clustering
for the constraints,I split the "glue" constraint into 2,one is cluster inner glue(glue constraint) and the other is glue between clusters(hard constraint,to make the entire wood structure a little bit softer)
and other modifications,for the bullet solver and setup for wood mass,etc,hope it helps
Wood_RnD_Example_File_v2.hip