Sydney mum Teresita Manalad, whose only son Raynor was killed in 2014, says she's tired of the case dragging on and on.

The man found guilty of the one-punch assault outside a house party in Sydney's west is yet to be sentenced.

Raynor Manalad's parents Roul and Teresita speak outside court on Friday. Credit:Peter Rae

"Enough," Ms Manalad told the NSW District Court on Friday.

"I'm sick and tired of this. I'm tired - let's end this. There are a lot of things I can concentrate on (instead)."