En el pasao, un compañero del foro me dijo que forzase mediante configuración al Kodi a que reproduciese a 24fps creando el fichero advancedsettings.xml
Código:
<advancedsettings>
<video>
<!-- Settings for when "Adjust refreshrate to match video fps" is enabled, available since r33806. -->
<!-- NOT available in the Dharma release or any release before that -->
<adjustrefreshrate>
<!-- "Adjust refreshrate to match video fps" will try to select the best refreshrate for the video fps -->
<!-- but it doesn't always get it right, for example it might switch to an unsupported refreshrate. -->
<!-- You can add overrides here to switch to a certain refreshrate based on video fps -->
<!-- It's possible to add as many overrides as you need. -->
<!-- Overrides are processed in order, if the first one doesn't match the fps or no refreshrates match -->
<!-- that override, it will try the next one until no overrides are left -->
<override>
<fps>23.976</fps> <!-- if the fps is between 23.966 and 23.986 -->
<refresh>24.0</refresh> <!-- switch to the first found refreshrate that is between 23.99 and 24.01 -->
</override>
<!-- If none of the overrides match the video fps, or no refreshrates match any of the fps matching overrides, -->
<!-- and no fallbacks are specified or no refreshrates match any fallbacks, -->
<!-- it will automatically choose the best refreshrate (same as having no overrides and fallbacks). -->
</adjustrefreshrate>
</video>
</advancedsettings>
La idea es que mientras dejo mi tarjeta a 60Hz (que así el cursor, Chrome, etc... va más fuído) que cuando reproduzca una peli el Kodi fuerce la tarjeta a cambiar a 24Hz y así no tengo ningún tipo de saltitos. Sin embargo, a pesar de crear el fichero advancedsettings.xml, la frecuencia de mi TV no cambia (sigue a 60Hz) cuandop reproduzco la película en Kodi.
Espero estar dando pistas para que algún experto me pueda ayudar 
Gracias!