It depends on the streaming solution you are using. Generally, a video stream from third-party tools loads from 10 to 30 secs later than the actual video.
⚡Note: If you want to learn more details if the video will be delayed from your streaming provider, please visit the help center of the selected streaming solution.
💡 Instead, a few tips I can give you to help with some improvement on this lag/delay are the following:
Use a wired connection. If possible, connect your computer or laptop to your wireless Internet router using an Ethernet cable.
Close down bandwidth-intensive programs to ensure you have enough capacity to stream smoothly. (Anything necessary while streaming)
Pause downloads (such as any updates) may be running in the background and turn off background updating programs.
If you are in a place with lots of other people, you’ll also want to ask them to pause their downloads & updates or wait until they’re done before you start streaming.