lektra is designed with focus on high performance, providing as much screen real-estate as possible and with no sacrifice on configurability. There's good wayland support (thanks to qt6). Features like Jump Markers, History Navigation, Sessions etc. are something I personally couldn't find in any other PDF readers.
If you are looking for a lightweight yet powerful PDF reader that can be tailored to your preferences, lektra is a great choice.
Please report bugs and request features through the GitHub Issues page