Laggy image on blackmagic output

Hey everyone, Im making a project for a broadcast tv environment using UE 5.4 to render a virtual studio, track cameras through MoSys using Livelink and sending the image to a Blackmagic output.

Okay, everything fine till now but, when the camera moves, the images lags behind the movement. Is like its jumping. Movement is smooth on the UE preview but on my monitor connected to the black magic looks laggy. My suspicions is because of the interlaced/progressive standard. The blackmagic outputs on interlaced 1080i50. When instead of the blackmagic i use a NDI output everything is fine in progressive. The blackmagic output is set to 1080i50.

Im completely out of ideas and this thing is consuming my whole brain energy and can’t figure out what I am missing.

Thanks ^^