Moza R9 + SRP Pedal, Gas Deceleration problem.

[ryou.azrael]

I have both Logitech GT Driving Force and Moza R9.
If I use Logi, gas deceleration isn't an issue, it works normally, when I let off gas pedal, speed does decelerate normally, at a rate of 2-3km/h per sec.

But when I use Moza R9, when I let go of gas pedal, it decelerate very slowly, it can took around 3-4 sec to decrease speed by 1km/h.

Anyone else encounter this issue? Is there an additional setting needed for Moza?