Sound lag during screen share

When I share my screen to a PowerPoint slideshow,  the other side person get my sound lag problem .  My slides are consist of gif and video. I noticed when I open a normal slide, there is no sound lag. But If I open a gif or video slide or a video from YouTube, the other side person Don't get my clear voice. 

My internet connection is 10 mbps and my laptop is ASUS vivobook(512 gb ssd, 11th gen) 

 I checked the ping time in my laptom in several time of the day. The average ping time  was 53-70 ms. 

So where is the problem and How can I solve this problem.