Nico Rosberg says the way in which Formula 1's new qualifying system has been dealt with is "not very professional".
Following meetings of the Strategy Group and F1 Commission in Geneva last Tuesday, it was announced qualifying would feature constant elimination in a bid to spice up the show.
The FIA said it would be introduced "potentially as soon as the beginning of the 2016 season".
But on Saturday, commercial rights holder Bernie Ecclestone said the format was on hold until May's Spanish Grand Prix -round five of the season - because of complications developing the necessary software.
When asked for his thoughts on the proposal and the subsequent delay, Mercedes driver Rosberg said: "It's not very professional the image they are giving with that, going back and forth.
"That's such a major change. It's good that we are thinking about it.
"It's important to bring them in as soon as possible."
Under the new proposal across the three qualifying sessions the slowest driver would be dropped at various intervals until just two drivers are left to fight for pole.
The finer details have yet to be agreed and the change also requires ratification by the World Motor Sport Council.
The revamp met a lukewarm response from drivers, with Daniel Ricciardo suggesting other areas of the championship need attention first.