Template argument size: 913941/2048000 bytes XXX save .3 % ???
Expensive parser function count: 0/500
Use a core
Preprocessor node count: 480782/1000000
Post-expand include size: 2048000/2048000 bytes
Template argument size: 917027/2048000 bytes XXX back to previous...
Expensive parser function count: 0/500
Hypothesis - the saved calls are relatively cheap. The cost is all from the "find". Therefore the process till bombs out on call 88. Seems unlikely but nothing else makes sense yet, apart form ascribing near-supernatural optimisation powers to the parser - which would mean we had no problems anyway.