FSAirlines

I was taking off from LLBG and i got an overspeed taxi penalty. The time of the overspeed was 31 second before i pulled up the gears. So i was on the runway when i got the penalty!

I have had the same glitch in the past when rolling out too long too. Not a common thing but it does happen from time to time if your takeoff roll is fairly long or your landing rollout takes longer than "normal".

The only time I have ever got that penalty on take off run is if I have had to pause the sim while on the runway half way through the take off roll.
That is guaranteed to give you a penalty.

Without pausing during take of roll I have never seen this, and I fly Concorde at max weight which takes a LOT of runway and a rotate speed of about 190 knots.

If this is a real problem I could try to put something in the next client so that you don't get the taxi speed penalty if throttle is above 80%.

I don't believe it is a big enough problem to require a revised client version, and some flight models need quite a lot more than 8% to get moving at high gross weights.