After installing bobby I've found that while it generally works and is great, some chunks, even ones I visit very often and that should be saved locally by bobby have a very hard time loading. This didn't occur before installing bobby. It's to the point where I have to stop flying in a direction because the ground runs out. Most chunks load well and in time for me to not fly into the void but sometimes I have to sit and wait for 5 seconds next to the unloaded area for it to load.

Here's a picture:

I'm playing on a server in 1.21.4