OBS Streaming at 150-300kb/s when my internet is good

[jvillamil602]

I really need your help, I'm new to streaming and I set my bitrate to 4000kb/s but when I'm streaming it goes down to 150-300kb/s.
Is there any way to stop this issue?

 

[jvillamil602]

Sorry for not including, my upload rate averages around 40mb/s