Yuzu uptime AMD 520

How long can we expect Yuzu to run with AMD radeon 520 Vulkan with 16gb ram

In order for us to provide better support, we need to see the log generated by yuzu. This guide will walk you through how you can obtain the log file: Getting Log Files - yuzu

Also Is legend arceus stable on Vulkan

AMD cut support for those generations of GPUs over a year ago, leaving them with a driver too old for more modern games, your only alternative is to use Linux.