ah1x is a lower model to al1x, like ua6500x to ua6800x.

"looks better" may be due to tv settings.

sometimes the shop guys set one on std mode, the other on dynamic to try to push sales for one model.

to be sure, u need to ask for the remotes and check the settings are the same for both.
u copied n paste the same in kodi thread.

for people to help, u need to specify what device u use and what app, version, where u got the app.

there are 4 ways to do icdrama:

.. kodi icdrama addon
.. rss icdrama kodi
.. rss icdrama android apk
.. rss icdrama androidtv apk

rss icdrama androidtv v1.0.0 is most suitable for the tv of this thread, it's working fine.

.. are ALL the links of ALL the shows not working like that?

.. is any app u installed on the TV working?

give this a try: settings, about, restart - this will clear garbage and restart the androidtv.
rss icdrama androidtv app is one of the most reliable apps, has always worked well.

the other 2 on my tv are astrogo and zaltv.