If you get a lot of errors in your console that look something like this, that’s probably why…
Asset dispatchworks/dw_mwstanier.ytd uses 96.0 MiB of physical memory. Oversized assets can and WILL lead to streaming issues (models not loading/rendering, commonly known as 'texture loss', 'city bug' or 'streaming isn't great').
Turning down texture quality to accommodate these garbage oversized assets might work, but ultimately they don’t need to be as big as they are. This guide might be useful [How-to] Optimize texture size | Fixing oversized assets | Bring any texture dictionary under 16 MB physical memory.