20 Gbit Network Is Not Enough For The Web Server

Hi.

I was trying to find a way to prevent server crash every time I do a streaming.

Basically I have a popular movie website and every time I release an episode I get minimum 30k live viewers and whenever I pass 8k live viewers, 20gbit bandwidth becomes useless. I tried to put 5mbps bandwidth limit occasionally to prevent server crash but it didn’t do much. And I don’t want to rent 100 gbit network bandwidth every time I release an episode. So my question is, is there a way to deal with 30 to 60k live viewers only by using 20 gbit network or I just need to rent 100 gbit network occasionally?

Thank you!