Final Cut Pro is freezing during editing after 10.8 update (still whit 11.00 version)

Hi Ian, thank you for your answer.

Every time I edit a video, when I add titles or a new media (like images), the FCPX playback starts freezing and keep going until I quit (or force quit) the app.

I don't have extensions, my drive is not full (old Mac was 256 gb and the new 512 gb).

And everything started when I updated to 10.8 (and also Sequoia).

I repeat: never had problems whit FCPX, everything started with the updates.

I thought was for the 4k vertical clip on a 1080p vertical project, but the problem persists also in horizontal 1080p projects with 1080p clips.

I tried to change some settings, 'cause there's a lot of people that had the same problem when working with the Trackpad, but still no fix for this issue.

Just uploaded on YT a video to show the problem (with the new macbook)

Hi Tom, thank you for your answer. That's the report.

That's also happening when I add effects or transitions.

That's the warning when the I add a simple effect.

Thank you.

I tried that, let's see what happens.

In case this don't fix the issue, I'll try a total reset, and set the Macbook as new.

What about the iCloud files? What I have to do? It is a problem if I sync iCloud?

(unfortunately the Google cleanup doesn't worked)

No, I don't.

Hope the issue is not correlated with other iCloud files.