# Fixing “broken” peaks in 3D plot

I am currently trying to get a nice smooth 3D plot using tikz, however, I am failing to do so in only one case. The complied file is smooth in most areas, yet, in the "peal" areas, the plot gets somewhat ripped apart. The example code is posted below, the data file is available at http://txt.do/dze2q due to length. I alread tryed various things, such as patch refines and shader = interp to get rid of the problem, however, nothing helps. I would be glad if anyone had a solution.

\documentclass{standalone}
\usepackage{tikz}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
view={25}{35},
width=12cm, height=10cm,
zmin=0,
zmax=6,
z buffer=sort,
xlabel={$\Theta$},
ylabel={$\lambda_0$},
zlabel={$MSE^{-1}$},
xlabel style={sloped}, ylabel style={sloped}, zlabel style={sloped},
ytick={0.2,0.4,0.6,0.8,1}, yticklabels={0.2,0.4,0.6,0.8,1},
xtick={0.2,0.4,0.6,0.8,1}, xticklabels={0.2,0.4,0.6,0.8,1},
point meta min=0, point meta max=6
]