Learn How to Downgrade
If you plan on installing a version of Android 10, or even if you don't, it's important to get familiar with the downgrade process.
If Android 10 starts causing problems, you should be able to move your phone back in an effort to improve performance.
There are a bunch of guides out there, but this one over on the Galaxy S8 Reddit is helpful and will guide you step-by-step through the downgrade process.
It's a bit tricky, but it's a great tool to have moving forward.
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