Adding or deleting of Tags is extremly slow.
The behavior is the same on all my installations (Windows 10 Pro).
The behavior is the same with or without activated plugins and has existed for a few versions.
When I use an installation with few tags and notes, tagging is relatively fast.
Joplin 1.5.7 (prod, win32) Client ID: fea0ba97613b45d8b1c8ee33e9f08413 Sync Version: 2 Profile Version: 34 Keychain Supported: Yes Revision: f1bbcea64 (master)
Sync status (synced items / total items) Note: 5294/5294 Folder: 47/47 Resource: 8973/8973 Tag: 1692/1692 NoteTag: 18234/18234 MasterKey: 0/0 Revision: 1204/1205 Total: 35444/35445