Question / Help Strange rollback with a nice config

[Firetank]

Hello !
My stream has rollbacks though my game runs at 60fps, I have no image loss and no encoding overhead.
Game: The Division 2
CPU: AMD Ryzen 5 2600
RAM: 16Go 3000Mhz
GPU: GTX 1060

Do you have an idea ?
Thank you in advance !

 

[Firetank]

Like that: https://www.twitch.tv/videos/402463437?t=00h21m20s
21:20

 

[Firetank]

The preview lag even when the stream is offline