Porsche 911 GT3 R - Shifters problem

Hello, I have the above mentioned wheel, paired with a Podium DD2.

I'm experiencing random blockages of the gears: sometimes they get stuck and it's impossible to change (upwards/downards). I have to stop the car, switch on/off the DD2 and then everything is back to normal.

This happened 2-3 times in the past 6 months or so, but yesterday (during the iRacing 24h of Le Mans) it happended three times.

There's no clear pattern in what causes the problem, and the system can get stuck in any gear. If I'm correct, it always happened while upward shifting.

Data about drivers:

PC driver: 356

Wheel base firmware: 670

Wheel base motor firmware: 38

Steering wheel firmware: 9

Podium hub firmware: 2

I am also running Fanalabs, V1.24 Beta.

Any help?