im using Claymore 15 and mining eth. reported hash is 825.9 and average 6hours is only 727,6mhs.
going to try TRM 0.6.0, curious about results.
I also feel the same with you, I tried both Claymore and PM both of them showing pool side (ethermine) more lower than in the miner(after deducted fee from miner and pool side).
will wait for your review after you try TRM.