EDL1 timing Issue

Hi !
I am using Emu black and the EDL1 datalogger. It works fine, but i noticed tha there are timing differences to the log on the notebook i usually have in the car.
I do log vehicle speed, everythig is dialed in and identical to GPS speed.I noticed that a 100-200 Km/h run takes 12 secods with my car. Dragy shows 12.1 s, so does the log recorded with the notebook. If if view the log o the EDL1, it shows the same run in 7.9 seconds.

Does anybody know why and possibly a fix ?

Mike

Can confirm the same issue, difference between 14 and 7 seconds
ADU Data:

EDL Data: