Episode content loads slowly on Kodi startup

Hello all,

I am using the following as the <content> tag for a recently added episodes widget:

<content target="video" sortorder="descending" sortby="dateadded" limit="10">videodb://tvshows/titles/-1/-1/?xsp=%7B%22rules%22%3A%7B%22and%22%3A%5B%7B%22field%22%3A%22playcount%22%2C%22operator%22%3A%22is%22%2C%22value%22%3A%220%22%7D%5D%7D%2C%22type%22%3A%22episodes%22%7D</content>

As you can see, I want to show the latest 10 unwatched episodes.  My issue is that, even though that is a database path, the widget does not load immediately on Kodi startup.  It takes a few seconds, even on a powerful Core i7 PC with 32GB of RAM on a Gigabit Ethernet network.  The media is on my Synology NAS, and it is accessed via SMB.

Is there anything I would need to change to make this content show up faster? I ask since I do not see the same lag on the recently added movies widget, which has the following content tag:

<content target="video"  sortorder="descending" sortby="dateadded" limit="10">videodb://movies/titles/?xsp=%7B%22rules%22%3A%7B%22and%22%3A%5B%7B%22field%22%3A%22playcount%22%2C%22operator%22%3A%22is%22%2C%22value%22%3A%220%22%7D%5D%7D%2C%22type%22%3A%22movies%22%7D</content>

And the media is coming from the same NAS, on the same network.

Should I be using a different path or content tag in order to speed the episodes widget up? Any help will be greatly appreciated.

Regards,

Bart