Maybe I should have ended my previous post with /sarcasm.
I strongly feel like you're putting zero effort in here to research things yourself. You're not replying to questions here that can help you with advice on what to do either. Others probably feel different, but it looks like you want a new PC and that's all.
As to streaming itself, there still are a few things we (probably won't get) need answers. First of all is indeed checking if your connection is strong enough. Secondly, what program are you using to stream? Thirdly, where do you stream to? Also, what kind do you stream?
Twitch Discord or something else? Because if you stream to Discord and don't have Nitro there's no point in wanting to stream 60fps because that's limited to Nitro users. If you stream to Twitch, they recommend lower than 1080p for fast faced games. They don't even have a recommendation for fast faced on 1080p. IF you want to stream 1080p, they recommend a bitrate of 6000, not 8000. Also, I read somewhere that a high bitrate may give Twitch a false positive about trying to overload servers.