Rekordbox don`t save my Latency

FIXED !!

Hi, using Windows 10 64 bit / Rekordbox 4.12 (have probs with higher versions / bad -poor graficchip). I use Rekordbox and change on the audio screen my latency from 512 to 256. But my lagency in Rekordbox and the DDJ-rx Asio driver don`t change them. If I reopen Rek. & Asiodriver >>>> 512 :(

Maybe the 1.0 Driver from Rekordbox 4.12 is the problem. What is the way to install the 1.1 Asio driver in 4.12. Have test this 2 month ago, but don`t find a way to work this config.

What can I do ?

Greetz

R.