SEVEN days after their drought-breaking win over Narromine, CSU crashed back to earth as they were thumped 64-5 by the Dubbo Kangaroos on Saturday at University Oval.

Playing to keep their Central West Rugby Union finals ambitions alive, the 'Roos took advantage of an ordinary university side to run in 10 tries and earn a bonus point. It meant they jumped past Cowra - who suffered a heavy loss to Emus the same afternoon - on the competition ladder into fifth.

CSU did have a couple of chances in the first half to make a contest of it when Gus Flannery and Maui Moody both had tries disallowed, but all-in-all the gulf between the two sides was enormous.

"It was a clinical performance," Dubbo coach Scott Vaughan said.

"We came here to try and get a game plan in motion and right from the word go, we were doing the things we spoke about before the game.

"We scored early in the first five minutes and got things going and we never really let up from there."

The visitors were on the board early through James Mata, who's try was converted by Hena Tuatea. Not long after some good hands and neat footwork allowed Dubbo fullback Joe Finch to score down the right edge.

The signs were not good at this stage for CSU and when Dubbo earned a scrum five metres out from their line, there was a sense of inevitability about where things were headed.

Sure enough, number 8 Simon Hegarty strolled over from the back of the scrum to score his team's third.

At 19-0 down, CSU created a couple of half-chances. They had a try to Flannery disallowed as he was tackled millimetres from the line, while Moody was ruled to have knocked on in trying to score one of his own.

None of it fazed Dubbo, who scored a fourth through Moa Kavaefiafi as he finished a length of the field movement.

Immediately after half-time he was in the thick of the action again as CSU shelled the kick-off and put their opponents straight back on the attack, and by the final whistle he had a hat-trick.

NSW Country Cockatoos centre Filisone Pauta demonstrated repeatedly how much strike power he offers Dubbo, and along with replacement Jacob Phillips, he got himself into the scorebook.

There was a ray of sunshine for the students late in the match in front of a crowd of past players attending a club reunion, as Moody crossed in the left corner. However, it was a rare positive moment.

In total after Saturday, the 'Roos have posted 124 points against CSU in 2015 and conceded just 10.

"We missed about 75 tackles in the first 10 minutes, that doesn't help your cause," CSU coach James McLaren lamented.

"I spoke after last week's game about how the boys looked like they believed they could beat Narromine. That belief wasn't there today.

"I might sound like an idiot saying it, but we had three tries disallowed all up and that was when the game was still something of a contest, it shows we're not a zillion miles away.

"It was a bit disappointing to not put on a better show for the old guys that showed up, to not show more grit and give them something to cheer.

"Hopefully they understand where we are at though ... We're all going to be old farts one day and we were all young idiots once. It's the circle of life, isn't it?"

DUBBO KANGAROOS 64 (Moa Kavaefiafi 3, Simon Hegarty 2, James Mata, Joe Finch, Filisone Pauta, Jacob Phillips tries; Hena Tuatea 7 conversions) defeated CSU 5 (Maui Moody try)