Weird durations for multi-point journey

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https://abrp.upvoty.com/b/report-a-bug/weird-durations-for-multi-point-journey/
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I’ve entered a journey with multiple waypoints. The last two legs (including an auto added supercharger stop) are being forecast to take hours more than they should. The journey from PR41AX to GU47BG should be taking about 5 hours but is showing as almost double that. I’ve checked Google for the same journey at the same time and it says 5 hours.

https://abetterrouteplanner.com/?plan_uuid=244c3e6e-b359-4f70-b3d7-ba327415afdf