Refresh rate query????

Hi all, just a small question, not too sure why it is bugging me to the extent it does, which isn’t too much.

Our family watches both live TV (using PVR simple client) and catchup TV addons here in Australia. A lot of content is 50i.

Before whitelist, CoreElec (and prior) would switch the display to 50p for this 50i content. From the whitelist versions (and I understand this may not actually be directly related), the very same content is output at 25p.

This seems logical and there ought not be a difference but there seems to be a minor difference in quality. The 25p output seems marginally less crisp, like there is a soft lens, and a little ‘milky’ in colour tones. Now this could be a the TV I suppose. If I turn of 25p in the whitelist, then the content is displayed at 50p and looks like it did before.

So, questions… Is this change in behaviour intentional? Is the only way of showing the content to turn of 25p resolutions?

There’s little benefit to whitelisting a refresh rate when there’s a multiple of said refresh rate available (ie. 25Hz and 50Hz, 30Hz and 60Hz). I’m not sure why Kodi selects 25FPS for 50FPS content (regardless of it being interlaced or not).

Maybe the TV implementation of 25Hz de-interlacing is worse, who knows…There’s a lot of “seems” in your statement - without direct visual comparison it’ll be hard to tell.