Camtasia Studio Editor timeline previews don’t show up right

In Camtasia Studio, previews of the project I was working on were showing up incorrectly or not at all. The problem would start after a few minutes of editing clips in the timeline. The preview area would either go black or show incorrect frames.

When the Camtasia screen capture Recorder is used, it will automatically ask if you would like hardware acceleration turned off, and will do that for you. However it turns out that the project Editor peformance is also improved when hardware acceleration is turned off, but that must be done manually.

To do so, right-click on the desktop, select “Properties” then the “settings” tab, then click the “Advanced” button, then select “Troubleshooting” tab, and move the hardware acceleration slider back to None.

The setting is buried in nested menus, but it works.