Board Thread:Theories and Speculation/@comment-32832770-20170815205233/@comment-26636534-20170819161116

^Apparently more than two clones interferes with SM at the point of his battle with Pain. However, Naruto stated in TBM he can gather natural energy much faster, so possibly the rate of natural energy absorption is even greater in SPSM. Due to Naruto gaining the "understanding" of how things work, I doubt there is a limit anymore.