It's because he plays mugs in the first few rounds of slams to find his groove, he doesn't get away with that at M1000 level.
I reckon he would gladly play a much better opponents in the first rounds at every AO and USO if instead of always being placed in Djokovic' half there since 2012, he always lands in the opposite Fedalovic' half from now on, but regrettably it's not possible even for once, 'cause they need him as fresh as possible for QF/SF to hopefully eliminate or maximally exhaust Djokovic and himself for the HC finals, in the another 6-setter, no.
So, despite his consistency at slams, HC Stanimal really underachived at the last five HC slams, because if not for him always being placed in Djokovic' half he would've made at least two more HC slam finals by now.
The same is true for Nishikori, he'll be in Djokovic' and Stanimal's half at USO/AO too, because Fedal (as against HC Stanimal) stands no chance against him there.
It would be perfect if Murray can be placed with Djok/Stan/Nishi at the next USO again too, no, but regretfully because of his seeding it probably won't be, so for the next USO/AO it's again Djok/Stan/Nishi + Cilic instead of Murray.
Fedal of course again in the other half from Djokovic at AO/USO/Wimb. as since USO'12. and Nadal as since 2008., no, bery, bery good for tennis and fans, no, just do it.