Lateral deviation on long legs

[SliderCDN]

Simbrief generated flight plan, imported and flown unchanged.
LEBL/24L N0428F340 DALI4F DALIN DCT DIBER DCT SOSUR DCT JULEE/N0431F330 DCT CRE CRE1Y LDRI/32

Between JULEE and CRE is about 400nm and about half way I noticed aircraft is 0.3L off on ND and 9nm to the right on Navigraph Charts.

[Gatlingorange]

Can confirm. Was flying EVRA - ENBR with a leg of 295NM. There was a big lateral deviation. It led to some confusion on VATSIM for the controllers as well.

[derpyemm]

Same for me deviations can be quite significant on long legs/directs

[derpyemm]

the deviations become very significant if you get a long distance direct, this is within 2 minutes, i have to keep entering the direct many times to keep it somewhat pointing the correct direction.

after a direct it immediatly starts deviating again

[esaahonen]

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