Hello Norma, it looks like it has been solved by Dell with the latest main update (6 days ago) and adding an optional firmware update. This last one must be found apart, in the lower menu, click ADVANCED, and then down in the second menu case that says ADDITIONAL OPTIONS, you will find firmware update.
That´s all, it's been 6 days now with no problems in Windows 11 on my laptop with volume, video, and audio lag/delay.