What's wrong with the Packers offense?

The Green Bay Packers offense isn't close to the dominant unit we've come accustomed to under quarterback Aaron Rodgers and head coach Mike McCarthy.

After their 30-13 victory over the Minnesota Vikings in Week 11, it seemed like the offense finally turned the corner. But on Thursday, the Packers could only muster 13 points in a loss to the Chicago Bears, and the questions about their offensive struggles returned.

While Rodgers will likely tell Packers' fan to "R-E-L-A-X" once more, there's no getting away from the fact the offense has issues that must be fixed in order for them to be successful come January.

Here are three such issues:

Davante Adams, the mid-season LVP

It seems harsh to single out one player when the entire Packers' offense is in a funk, but Davante Adams' performances have been so poor, it's fair to say he's hurting - rather than helping - the team.

When Rodgers targets Adams, his passer rating is 59. When you compare that to his passer ratings when targeting James Jones (115.5), Randall Cobb (98.1), and Ty Montgomery (131.6), it's clear Adams is the receiving corps' weak link.

The tape tells a similar tale. The second-year pass catcher has struggled to gain separation, has looked sloppy in route-running, and when he does get free, has struggled to make routine catches (six drops since the third game of the season, according to PFF).

Before the season, the Packers lauded Adams as their offseason MVP, and when Jordy Nelson was lost for the season, there was hope Adams would replace a chunk of Nelson's production.

Not only has Adams failed to reach expectations, he's actively disrupting the flow of the offense. While he has time to turn his season around, the Packers might be better off moving some of his snaps and targets to other receivers.

A need for speed

The Green Bay offense has the NFL's slowest group of pass-catchers, according to Rob Demovsky of ESPN.

While speed doesn't automatically equal quality, it's a key component when creating a successful deep passing game.

Rodgers is throwing for a career-worst 6.9 yards per attempt, which puts him 22nd among qualifying players. Rodgers, who's used to dominating this category, suddenly finds himself on the same level as Sam Bradford and Ryan Fitzpatrick.

To put this into context, Rodgers' worst previous mark was a 7.5 YPA in 2008, his first year as a starter. The last two years, he's finished with YPA marks of 8.7 and 8.4, respectively.

This can be explained mostly by Nelson's absence, who was one of the NFL's best, and most underrated, deep threats. Without him, Jones has been the Packers best deep option.

Many will point to Jones averaging nearly 20 yards per catch, but he's cooled off considerably in recent weeks. In the past five games, Jones has been held without a catch twice and had just one catch for two yards in another game.

In short, Jones is an inconsistent threat at this stage of his career, and in turn the Packers' deep game has become inconsistent too. They don't have the outside speed to challenge teams deep, which is causing defenses to focus on disrupting their short throws that are vital to their version of the West Coast offense.

Running game shows life, but still dropping the ball

The Packers run game has finally come to life after a poor start to the season, and while it didn't equal a win Thursday, it provided optimism that they've started to make the necessary adjustments to fix their inefficient run game.

It all starts with Eddie Lacy, who looked like a shell of his former self for most of the year, earning a demotion because of his lack of production.

Recently, Lacy has returned to form by rushing for more than 100 yards in back-to-back games, but there's still an issue: Fumbles.

Lacy fumbled in the Chicago loss - his fourth in fives games. His success will be vital to the Packers turning their offense around, but his ball security must improve. With their lack of offensive efficiency, turnovers must be kept to a minimum in order to compensate.

While the running game appears less of a concern than it did several weeks ago, the Packers must build on the current improvements.