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This guide explains how to launch any external player of choice from KODI and return to KODI when finished seamlessly.  Choices in players are up to each individual.  DVDFab Media Player(s) are one brand of player and they offer 2 versions, each extremely different from one another.  You stated your interest is only UHD-HDR and you don't desire menus.  That increases your choice of player(s) to handle the task since only a couple are capable of handling any type of menus.  Differences, pros, cons, etc., are described in the guide.  Your equipment is more than adequate.