I have Photostory 2022 with all the latest updates. Spent hours completing my show, originally worked fine. Now while previewing it freezes yet the cursor moves on.
Computer specification and program version, see this topic for what is required and please quote processor and graphics card make/model in full - I would suggest you put this information in your profile signature so we do not have to keep asking for it.
Are the graphics card drivers up to date?
A screen shot of the Program settings, Device options tab would help.
Are you using any video clips on the timeline - if so what format and resolution are they - a MediaInfo analysis may help - download and install MediaInfo and analyse one of the clips and post the results, see this tutorial on how to setup MediaInfo and analyse a video clip for all the data required. .
The amount of free space on the hard drive(s) you have.