Took my own advice and removed an inappropriate use of polymorphism.  There's a somewhat technical word  EDATA which points other words to the ENTITY object for any object that implements the IENTITY interface.  (Components implement it.)  It was originally a method.  Methods are slow.  But SO many words called EDATA, crucial stuff like position.   I changed EDATA to a code word; now all it does is fetch the address pointed to by THIS; the rule is, all IENTITY's have to store a pointer to an ENTITY in the first cell.  Bind by memory layout instead of method table, get 35% speed gain.

Only Forth lets you break out of structure to make better use of resources so elegantly and painlessly.  I think it's a preview into a future of less waste.