I know that I have to buy a recent tv just for pleasure, but problem is not this. (My tv has a colors much better respect a recent tv that I saw).
I searched for good and I know for a fact that supports 24hz. Here's a full specifications if you want:
http://www.lcd-compare.com/televiseur-LG42PQ2000-LG-42PQ2000.htm
https://www.amazon.de/LG-HD-Ready-Plasma-Fernseher-integriertem-schwarz/dp/B0026MKVNQ
Anyway, 24 or not 24, himedia must definitely fix microstuttering and judder. With a PC, PS3, MacBook Pro and simple dvd player connected to the TV with hdmi I don't get any stuttering with all type of format with various fps. Also with my old WD TV Player that I selled to buy Q10 Pro. So the problem is not tv because if so every person with a no-recent TV in the world would have problems with video files.
As I said at the begin of thread, I don't get any problem with file in HD and FHD. Only with SD quality, and this is unacceptable because an universal player should not focus only on high formats and failing with low formats that are still a standard.
UPDATE: I changed output to 720p 50hz and stuttering with 25fps is less frequent and perceptible. So i think himedia frame switch is based on HZ and this is a big and totally error, because the framerate switch is must be based on FPS of video files. It's a very shame for a potential box. I hope himedia will change these point for next major fw release.