What exactly u mean by "good enough for movie"?

Do u mean picture quality, audio quality?

Using external hdmi input or internal tv player via usb?

PQ is the result of 3 things:
source->player->TV.
the TV is a slave display, overall it is fine, can handle up to 4k HDR.
what player r u using and what sources?
if they are decent, the result on TV should be very acceptable.
if u r playing small files with a lousy box or mediocre player, u will get reasonable but not great results.
by small files, i mean those 1-2GB ones whereas big ones are 80-90GB.
good media players today wud be RM500 to RM2K; cheap ones can be as low as RM88.

in addition, the TV has a native "content player" app - this app, to me is not good, don't use.
if u want to play back direct on TV usb, just install Kodi (i hope u know this app) from playstore, set audio passthru.
this way, u can play files in a 2TB hdd, many formats, 4k HDR videos.
via optical output to yr HITB, u will get Dolby Digital audio; the TV can only do DD, so DTS and everything else will be transcoded to DD.
(i hope this answers yr question in the other thread.)

the above applies to ua6800x and should apply to al1x without any difference.

Lazada quite cheap. I bought it there.