Have spent some time testing that.
What I’ve done is disabled ALL TD Constantly operating filters so they don’t mask the results.
When car is standing on starting line DI Damper effect is show as filled balloon (active)
Shortly after starting moving it turns into empty circle (effect registered but not active).
Running back and forth multiple times with DI Damper at 100% and 0% did not register any difference in my system, all felt the same. Adding little 5% of TD damper (the one at the top) registered right away and was very noticeable.
For the reference, this is how to properly interpret Active notification flag next to DI Effect.
Honestly don’t know how to explain anomaly you are experiencing, unless it’s just some placebo effect.
And on separate topic, discovered another not so pleasant thing with new Gyro implementation, you can read here. Join Gyro discussion there if you wish, Stereo (mod author) on that forum and responding too.