My Obsidian vault was getting slow to load. It only has about 4300 notes. I'm now doing a test where I turned Restricted Mode back on (Settings -> Community Plugins -> Restricted Mode turn on and reload). This disables all your Community Plugins and reloads Obsidian. For good measure I restarted Obsidian a couple of times. Then I turned Community Plugins back on. So far, so good and loading is much faster. Maybe there was something corrupt that the Restricted Mode cleared out? It was a simple fix so definitely worth a try if you vault is behaving similarly.
#Obsidian