The Chairboys, who had not scored in their previous five away games, provided themselves with a spot of hope after recording their biggest win of the season en route to back-to-back victories for the first time since early November.
The visitors were afforded a dream start when Admiral Muskwe netted inside 90 seconds and former Barnsley defender Jason McCarthy added a second with a deflected 24th-minute striker.
An awful afternoon was compounded late on when substitute David Wheeler added a late third.
Warne said: “I think the actual occasion took control of some of their performances. In a weird way I think the lads wanted to win too much.
“It is difficult picking them up. But we created enough chances to get something. It is my job to try and pick them up and the difficulty is every personality is a little bit different.
“I knew it was a big game. But I didn't want the lads to go into it thinking it was a must win. After they scored, everything was a bit rushed and there was no tempo to the game. It never got any flow.
“I always knew this was going to be a really tough game. What Wycombe have done this season has been excellent.
“Goals change games and I thought they managed the game really well. They made it really difficult for us and I knew it was going to be the case. The first goal had a massive swing in the psyche of both sets of players.”
"After they scored the first goal, everything was a bit rushed and there was no tempo to the game at all. There was always a scream or a free kick and it just never got any flow really.
"I always knew this would be a really tough game. It is not the pomposity of football, but people see the league table and what Wycombe have done this year has been excellent and they have accumulated a lot of points and beaten better teams than us.
“So I am not surprised how they played, but just disappointed that when we had opportunities to score, we didn’t and in my opinion, that is why we came away with a three-nil defeat.
"We had enough chances in the first half to get at least one goal back and we did not take them and then unfortunately, the pressure mounts and the frustration gets bigger and bigger and before you know it, the game has seeped away from you and you have come away with nothing."