Sequencer Render problem

Hello all,
I’m having problem to render simple camera cuts. The current render is laggy/choppy.
I wonder if the scene size can participate ? Number of assets ? (tried on a different one, the render is fine).

What I’ve tried :

  1. Use the sequencer in another project “soul city demo” :
    works fine.
  2. Use the sequencer in the same scene
    without 95% of the props : not
    working
  3. Disabled “Force Fixed Frame Interval
    Playback” and checking that play
    rate >= 1.

Here are my settings.

Thanks for your time,

Solved
What I needed to do is encode the video to reduce the file size to keep the quality.