Vido Streaming Out/In TOP Problem

Hello there,
I run into the live streaming problems when I use video streaming out/in TOP with SRT protocol.

Problem1 :
From the Sender side, I send a live input with point cloud effect in 2048x2048 resolution(internet upload speed is 1G bps)
But on the receiver side, I receive a bad content from it…(internet download speed is also 1G bps).

Problem2 :
From the Sender side, I send a live input 2048x2048 resolution and audio stream both on video streaming out TOP .(Internet upload speed is 1G bps)
But on the receiver side, I receive video stream and audio stream successfully in first 8~9 minutes . After that, I lose the audio stream about 20 seconds or more.(Internet download speed is also 1G bps).

I have no idea what happen between this process, and want to know what the reason may be ?
Hope someone could help me to solve this problem!

Thank you very much!