Waterfall return is trickling weird rather than a nice flow

[ehw37]

We have a waterfall return and it always looks sooo pretty. Regardless of how high I had it on, it always flowed evenly all the way across. Now its ugly like it isnt pushing enough through or something. Its not a nice connected arch the water is cut at each section and drizzles down. Hard to describe. All the skimmers seem to be working, the pump is primed. I really cant find anything wrong with it, just the waterfall isnt right. Even when I turn the feature full blast, all the way on, it still looks weird. Anyone know what could be causing this? Is there a way to post video?

[Denniswiseman]

Check your filter isn't clogged
Is the pressure higher than normal
Try backwashing the filter