Driskel completed just nine of 28 passes for 93 yards and threw two interceptions in the Gators' 42-21 loss to Alabama last Saturday.
Muschamp said freshman quarterback Treon Harris could earn playing time due to his continued improvement, but Driskel remains the team's starter for now.
“I thought [Driskel] forced 4-5 balls where in some situations you check the ball down or you take the ball somewhere else," Muschamp said. "He had four drops.
“But Jeff needs to play better, he understands that. He certainly forced some things that we can’t afford to do, and especially on two of the interceptions. Jeff gives us the best opportunity to win right now.”
Driskel, a senior, has completed 56 percent of his passes overall this season for 636 yards, five touchdowns and three interceptions. He played in just three games in an injury-shortened 2013 season but threw for 1,646 yards, 12 touchdowns and five interceptions in 12 games in 2012.
The Gators are 2-1 this season and play at Tennessee on Saturday.
- Ben Estes