Counterpoint: Nautilus is both slower and less stable than Windows Explorer on large folders, even though the Linux filesystem is much faster. These super-indexed desktop linux search functions are also dog slow, while `grep` and `find` in the terminal are much faster (for searching inside files), and those certainly don't cache anything.
Thunar is very fast compared to Nautilus.
Windows Explorer crashes for me about ~3 times a day at work, and takes down the taskbar with it, so not sure about more stable. I don't use Nautilus though because it's pretty bare bones compared to Dolphin. Also:
> These super-indexed desktop linux search functions are also dog slow
Baloo-indexed KRunner on Plasma is instant. I index my entire home folder, including hidden files, and I can substring search with imperceptible latency. I can't speak to other search implementations, but yes KRunner + Baloo is much faster than grep.