[Steam] Why did the 5,7 MB mini-patch take over 30 minutes to update?

Due to the way Path of Exile's patching works, we use a large content.ggpk file with all the necessary in-game files. This is quite a large file, and can be found in the following directory:

Local Disk (C:)\Program Files (x86)\Steam\SteamApps\common\Path of Exile

Due to the way Steam patches games, this can mean redownloading this large content.ggpk file for each patch. If you have a slower network connection and find these patches to be too large, you are welcome to instead use our Standalone Client.

However, if you have already fully updated your Path of Exile and feel that there is an error here, you can try to Verify your Game Files. There is an excerpt at the bottom of the first post of this link for Steam Users to do this and confirm that the file is fully updated.

If there's still an issue here, feel free to post here and fellow forum members can approach this where appropriate.