Hiss at the Samsung UE32D5000

I use serviio 0.6.2 with standard preset for Samsung D-series.
Most of files played very good, but at the some mp4 movies I get hiss.

Mediainfo of the hissing movie:

General
Complete name : N:\Video\1.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 37.1 MiB
Duration : 6mn 29s
Overall bit rate : 798 Kbps
Encoded date : UTC 2007-09-26 07:31:00
Tagged date : UTC 2007-09-26 07:31:00

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 16 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 6mn 29s
Bit rate : 735 Kbps
Maximum bit rate : 2 524 Kbps
Width : 720 pixels
Height : 544 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.075
Stream size : 34.2 MiB (92%)
Writing library : x264 core 56 svn-677
Encoding settings : cabac=1 / ref=16 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=7 / brdo=1 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=0 / mbaff=0 / bframes=3 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=1 / bime=1 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=crf / crf=22.0 / rceq='blurCplx^(1-qComp)' / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30
Encoded date : UTC 2007-09-25 10:02:51
Tagged date : UTC 2007-09-26 07:31:04

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Codec ID : 40
Duration : 6mn 29s
Bit rate mode : Variable
Bit rate : 59.1 Kbps
Maximum bit rate : 74.7 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz / 24.0 KHz
Compression mode : Lossy
Stream size : 2.75 MiB (7%)
Language : Russian
Encoded date : UTC 2007-09-26 07:31:04
Tagged date : UTC 2007-09-26 07:31:04

[zip]

what do you mean by hiss? This is a 5.1 profile file so will be transcoded to mpeg2, which might require powerful CPU to play smoothly.