one more tip for anyone else with a PC as low end as mine…uninstalling the NVidia app made a significant difference to the smooth running in terms of FPS.
Also, running at 1440p resolution (my monitor’s resolution), but rendering at 75% (so 1080p basically) with temporal interpolation on rather than running the whole game at 1080p results in slightly better graphics but the same FPS
If you haven’t got head-tracking (I’ve got TrackIR from the early noughties which still works great!), you’re really missing out! (TrackIR alternatives: A review of several “free” head-tracking alternatives to use with Flight)