Vics have now lost nine home matches in the league this season after Terry Brown's men claimed a 3-1 win.
"It's very, very frustrating," he told the Guardian afterwards."How many times have we had this conversation this term? Another chance to push on into the top half has gone begging."
But Burr had no complaints after the Shots' impressive performance.
Ryan Williams, Jonny Dixon and Mark Molesley were on target for the visitors.
"They were better than us on the day," said Burr.
"But I thought the second goal was a very poor one for us to concede.
"And of course it was all the more sickening coming seconds after Michael Byrne missed a great chance at the other end."
Burr refused to blame the blustery conditions for his team's indifferent display.
"The wind was a factor but in truth they adapted far better than we did," he added.