If I had this information only and its all I had to work with, I would conclude based on this you are doing something bad on the btn.

at first glance i think you're getting hurt by

-folding too much vs 3bet

-folding too much vs steal from the blinds

-4betting too much? (if you can post your "4bet range" stats by position i can get a better idea)

here are some other stats to post that i think are helpful in major leakfinding ..

-bb fold to button steal

-c/f flop as pfr

-flop fold vs c-bet (single raised an 3bet pots)

-turn fold vs c-bet (single raised and 3bet pots)

-call 3bet % by position

-vs 4-bet fold %

it's definitely not bad, but i think you can defend wider at these limits and show a profit

also you're not cbetting turns often enough imo. this may be a function of how you construct your flop cbetting ranges, can't tell for sure just by looking at stats.

So you're basically folding the flop a bit more than 1-A and folding the turn a bit less, do you think that's exploiting the c-bet ranges of the player pool?

Also, you're check-folding the flop 45% and have a 23% oop C-Bet (or was the C-Bet thing from a different a sample?)  That would mean that 32% of the time you're checking/continuing on the flop as the pfr.  With a 23% OOP C-Bet, you're checking 77% of the time.  You're therefore defending the following amount of your checks:

32/77 = .4155

This seems far less than alpha.  Do you have any thoughts on why this would be?  Also, when you say you're doing well could you give some kind of 95% confidence interval win-rate from the sample that you used as reference for those stats? 

This really shows how tough the games are when someone with what looks to be solid stats breaks even over 300k hands.

What do you feel yourself. Have you been running bad? What's your ev line look like?

Edit: How can he be 4 betting too much with a 4bet% of 8.8!? Too low imo

Whats a good winrate for these games? If its something like 2bb/100, then this can easily be variance as well. Kinda brutal to think about.

I think the problem is probably in your postflop play.  57% w%sd seems very high to me, you're probably not calling enough somewhere (or maybe you're bluffing too much).  I tend to find my w$wsf+w$sd sums to around 100, for instance these days I'm usually around 48% w$wsf and 52% w$sd, or thereabouts.  I tend to think you're giving up with marginal hands too often and trying to showdown, for instance you're cbetting only 59% and cb turn only 47%, which is a fairly nitty style.  My guess is you need to focus harder on hand/board texture reading postflop, as your preflop stats are solid.

Random question, maybe this is a pokertracker vs HEM thing but how can EP 3-bet be 2.6? In HEM this simply states n/a since you are first to act so can't 3-bet.

I think that you can not beat zoom games with loosing so many bb/100 at NSD.You can not make this up with showdown winnings. So maybe you fold to much on flops and turns, you don't steal enough, you don't defend blinds enough, you don t c/r enough, your 4bet should be around 12-15% I guess etc...and you definitely don't value bet thinly enough. It is rare to see a winning player even at 200nl that is giving up so many bb/100 with non showdown, at 400nl you will probably not even find one. Check you database and you will see that most winning regulars at your stakes loose much less with NSD.

i think you should learn to play heads up. Improve your technique and go from there. Your style dosnt beat the game - Insanity is trying the same thing over and over expecting different results.

congrats on your vvps though :P