AFX Preview, no Sound - not possible to work

Hi there,

sorry about my language. - need help.

The Preview in AFX is not Working very well.

My System:

Mac OS 12.2.1 (Monterey)

iMac (Retina 5K, 27 Zoll, 2019)

3 GHz 6-Core Intel Core i5

64 GB 2667 MHz DDR4

Radeon Pro 570X 4 GB

AFX 22.2.0 (Built 220)

95G Cache on other SD Disk, or same Disk doesent matter.

For me It look good. (But dont work fine)

--> in "About AFX" - 1% of 64 GB used.

Open my Project, at first: It can Preview, with sound and its ok.

Change some Keyframes, sound plays very short snip and then not any more.

Can't arrange Textanimation without Sound.

Its about 20 - 3D Layer with Text.

One Wav File. 4Min

About 20 MatteLayer

Try to make this easy thingything. (https://www.youtube.com/watch?v=I9w5aunGJs0)

I can not believe that my System ist to old or slow, maybe GraficCard to bad?

- Any Ideas to optimize?

I think the System requirements are in my range.

AFX is Fresh, OS 12.2.1 on Mac ist Fresh.

Any Idea??

thanks a lot

Jekill