I’d like to make a PR just fixed this issue in my own viewer. Issue is that about 45 degrees of roll sometimes more sometimes less (scene dependent) is required to match camera positions to the frame they come from. This makes the camera view skewed and affects pathing (the spline is slightly off). Its a simple fix I’ll be putting a PR in for shortly that immediately corrects this because supersplat simply is not calculating the rotation quaternion from the target and camera position once calculated it can be applied and then its corrected perfectly.