Don't Install If You Hate Dealing With Problems
If you can't handle bugs and problems you shouldn't run pre-release software on your phone. Plain and simple.
There's a reason Samsung calls this a beta. This version of the Galaxy S8 Android 8.0 Oreo update is unfinished. Unfinished software is typically buggy and Galaxy S8 Oreo beta users are already reporting issues with the software. Go figure.
Beta testers are reporting issues with various apps including Samsung's own applications, weird battery drain, Bluetooth issues, Wi-Fi issues, installation problems, themed content (Samsung warns themes might not work with the beta), and various other bugs.
It's still very new so we expect the complaints about the Galaxy S8 beta to pickup as more people try the new software.
Samsung isn't going to sit on its hands. The company will roll out bug fix updates to correct at least some of these problems. That said, each beta release will have its own collection of issues and we expect bugs and performance problems to plague the beta all the way through the testing process.
If you only own one Galaxy S8 and/or you don't have time to deal with issues on your device, avoid the Galaxy S8 Oreo beta.