[Tero Ahlfors]

[Juan Irache] “Well, the area where you can click for it to load on frame 0 is about 1 or 2 pixels wide”

It really isn’t ¯\_(ツ)_/¯

[Tero Ahlfors]

You can also disable hover scrub if you don’t need/want that feature.

[Tero Ahlfors]

Click closer to the thumbnail.

[Tero Ahlfors]

Don’t double click on the thumbnail but click on the empty space on the left side of the thumbnail.

[Tero Ahlfors]

https://helpx.adobe.com/creative-suite/kb/error-case-sensitive-drives-supported.html

[Tero Ahlfors]

What was the file created with?

[Tero Ahlfors]

Yes. But the optimized media and cache can be set to different formats. So you have them both set to DNxHD?

[Tero Ahlfors]

[Duke Sweden] “What do you mean?”

Optimized media and cache media can be in different formats and they have their own setting.

[Tero Ahlfors]

What is your render cache format?

[Tero Ahlfors]

[Michael Gissing] ” Is the F drive anywhere near full?”

This can affect the performance. If the drive is starting to fail it can also get slow. You could check your drives with the disk speed test.