When the Cryptomator vault is open, Windows 11 explorer is slow to open (probably due to slow decryption). It takes about 4 seconds vs instantaneous with the vaults closed. The onedrive vault is 1GB and the DropBox vault is 500GB. I don’t remember that version 1.6.x was this slow.
This is 12th generation i7 with 64GB RAM and SSD drive.