@juliean and as I see, problem occurs exactly here _Mysb::getloc(). If I watch for _Plocale variable, it is NULL, but in normal should be “C”

I ended up contacting Fanatec, and got suggested to use INFINITE for the effect duration. I used 500ms as a cheap workaround to stop the effect when the game is paused, as my plugin didn't have the plumbing to detect game pausing.

This solved the issue I was having.