Fsbuild-2 Flight Planner

FSBuild seems to have a problem planning the flight

EHGG EEL P999 ALS T53 KOR EKCH

The navlog gives:

CLB BIAS 0.0% CRZ BIAS 0.0% DSC BIAS 0.0%
DEP BIAS 0 MIN 0 DIST 0 FUEL, ARR BIAS 0 MIN 75 FUEL

EHGG EEL P999 ALS T53 KOR EKCH/0355

M/H FL WIND ATC
TO NM AWY M/C TAS G/S ZT ACTME ETA ATA ACBO ABO REM AREM

N5309.8/E0640.0 054 CLB 253014 EHAA
EEL 112.40 004 DCT 056 166 179 00/01 00/01 .../... 0000/... 0080/...

N5323.9/E0656.9 031 CLB 253014 EDWW
SOMPO 017 P999 034 166 176 00/05 00/06 .../... 0000/... 0080/...

N5411.1/E0754.6 031 CLB 259021 EDWW
DHE 116.30 059 P999 035 256 271 00/14 00/21 .../... 0002/... 0078/...

N5449.4/E0945.0 059 250 217018 EKDK
AMRAK 075 P999 058 297 309 00/14 00/36 .../... 0004/... 0076/...

N5454.3/E0959.6 057 250 238012 EKDK
ALS 114.70 009 P999 057 297 308 00/01 00/37 .../... 0004/... 0076/...

N5516.5/E1038.8 044 250 238012 EKDK
TUDLO 031 T53 045 298 306 00/06 00/44 .../... 0005/... 0075/...

N5519.7/E1057.7 072 250 277012 EKDK
LUGAS 011 T53 073 297 308 00/02 00/46 .../... 0005/... 0075/...

N5524.4/E1126.3 070 250 277012 EKDK
KOR07 017 T53 071 297 307 00/03 00/49 .../... 0006/... 0074/...

N5526.3/E1137.8 068 250 307013 EKDK
KOR 112.80 007 T53 070 297 304 00/01 00/50 .../... 0006/... 0074/...

N5537.0/E1239.3 067 DSC 316011 EKDK
EKCH 037 DCT 071 149 153 03/04 03/55 .../... 0073/... 0007/...

The leg from KOR to EKCH takes a whopping 03:04 hours (37nm distance). I don't understand why it does this. I run ASA as well (winds aloft).

Anyone an idea what I'm doing wrong here?