Imagine this but for a 32 Terabyte RAID. https://stereophonic.space/media/dfdf09ad2f0d0d137fca5a2c5955fff064fecab805b396df62c3d81a575dcc76.png
If I remember right it eventually gets faster
Also just FYI. Ext4 filesystem stores directory structure as a linked list, so search and access time increases linearly with the number of nodes in a directory. The best way to kill performance is to create 100000 subdirectories lmao. Which is to say, Ext4 sucks immensely.