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.
Old:
New:
other objects that use player_water:
For now there is a problem when disabling the option "prefer gsls"