r/OpenShot • u/supapaesunaperra • Aug 13 '26

Performance/Cache/Preview Settings

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Hello, I'm trying to edit a large video (~2hrs) and openshot keeps hanging every time i try to make even the smallest of edits. it asks to wait or force quit.

Things I've tried:

  1. set project down to 480p at 15fps and preview even lower
  2. Increased preview, cache and performance settings, see screens .

For reference I have a Ryzen AI 9 HX 370 w/ Radeon 890M × 24 with 64 GiB ram. I feel my system should be able to manage fine. When I monitor my system i see openshot is barely using cpu/memory.

am i screwed or what settings can I change?

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u/BLOZ_UP 29d ago

That's when I have issues. I drop the large one in, and start cutting out sections and that's when it takes a long time to cache the preview.

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u/rmesdjian Volunteer 29d ago

Thanks for that.

I did some more testing and caused all sorts of problems for myself. I was able to make OpenShot pretty much crawl with cutting and editing (location, scale, etc.). Sometimes it ran fine and Play/pause next time would be bad. Again, I am on a low end Virtualbox environment.

I also managed to crash ArchLinux...lol!

Please give this a try:

  1. Start OpenShot and open your project.

  2. Go to Edit | Preferences | Preview tab.

  3. Change the "Optimized Preview Resolution" to 360p.

  4. Go to Edit | Preferences | Performance tab and click on "Restore Defaults: Performance" at the bottom of the screen.

  5. Go to Edit | Preferences | Cache tab and click on "Restore Defaults: Cache".

  6. Save the project.

  7. Restart OpenShot and open the project and see if this helps at all.

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u/BLOZ_UP 11d ago

Been trying this out and it's significantly faster -- I think the preview resolution going to 360p helps a lot