The material player_water has several settings, which were not actually implemented, which is why it looks bad.
This is normally not a problem, because it is only used in small places, but the rice fields of the Han feature it prominently.
Of course it would be best to actually implement these settings, but that is out of my capabilities.
So here is a hack to improve the current situation.
Note: I'm not sure where this material is used elsewhere, so I did just check how it looks on the rice fields. But according to @wowgetoffyourcellphone
it doesn't look good in the other places either.
Old:
{F2229015}
{F2229016}
{F2229017}
New:
{F2229021}
{F2229022}
{F2229023}