Web_video_server latency/lags

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I use web_video_server in my project. But video stream has very big lags and latency https://youtu.be/yXp9vstm8bA I use mjpeg codec and firefox browser Url: http://0.0.0.0:8080/stream?topic=/...... In Chrom browser situation not better.

I am also tested web_video_server with other params such us quality and other type=ros_compressed. But its not helped What params I must use for minimal latency??? Please help.

I am also tried use webrtc but cant install it. What better practices for videostreaming from ROS to web browser (with min latency).