Rasplex not playing all items

[OttoKerner]

The latest release of Rasplex is now over 2 years old

[RELEASE] RasPlex 1.8.0

Today we announce the release of RasPlex 1.8.0. This release focuses on fixing transcoding compatibility with PMS 1.3.x or newer and adding Voice Control (Alexa) support. Big thanks to @benjaminwolf, @“daniel.cull”, @dlanor, @MagnumDoomguy, @DeadEyeFlint and @bkury for working hard to ensure it’s polished and ready to roll! New Voice Control (Alexa) support Support server terminated playback Use music metadata from Streaming Brain Only load first 200 items in a photo slideshow Addon reposit…

And an update is not in sight, AFAIK

You can try to install LibreElec and the Plex4Kodi add-in.