Following his indictment for aggravated assault on a peace officer, among other crimes, Lewis Harris moved to dismiss the charges against him on the ground that his constitutional right to a speedy trial had been violated. The trial court denied the motion, and Harris appeals. For the reasons set forth below, we vacate the judgment and remand the case with direction.

Harris was arrested on May 14, 2006, and, in connection with events occurring on that date, he was subsequently indicted on March 12, 2010, for aggravated assault on a peace officer, possession of a firearm during the commission of a felony, possession of a firearm by a convicted felon, and possession of cocaine with intent to distribute. On July 27, 2010, Harris moved to dismiss the indictment based on the alleged violation of his right to a speedy trial. The trial court held a hearing on the motion to dismiss on May 9, 2011, and it denied the motion in an order entered on June 17, 2011.

In deciding a constitutional speedy trial claim, courts must engage in a balancing test by considering “(1) the length of the delay; (2) the reasons for the delay; (3) the defendant’s assertion of the right to a speedy trial; and (4) prejudice to the defendant. Barker v. Wingo, 407 U. S. 514 (92 SC 2182, 33 LE2d 101) (1972).” 1 “The existence of no one factor is either necessary or sufficient to sustain a speedy trial claim, and a trial court’s findings of fact and its weighing of disputed facts will be afforded deference on appeal.” 2 Accordingly, with the Barker factors in mind, we review the trial court’s ruling for abuse of discretion. 3

(a) Presumptive prejudice. The length of the delay figures into the Barker analysis in two respects. The court should first consider the length of the delay to determine if it crosses the threshold distinguishing ordinary delay from presumptively prejudicial delay. 4 “If such a presumption is not warranted, the analysis need go no farther because the accused’s speedy trial claim fails; if, however, the delay invokes the presumption of prejudice, then the analysis pro *566 ceeds to the examination of all Barker v. Wingo factors” 5 Here, more than five years passed from the date of Harris’s arrest to the denial of his speedy trial motion. 6 The trial court correctly concluded that this pretrial delay was presumptively prejudicial and required examination of the remaining Barker factors.

(b) The Barker factors.

(i) Length of the delay. If the threshold inquiry is met, the length of the delay should be considered by the trial court again “by factoring it into the prejudice prong of the Barker analysis, with the presumption that pretrial delay has prejudiced the accused intensifying over time.” 7 The presumptive prejudice arising from the delay is “part of the mix of relevant facts, and its importance increases with the length of delay,” but it “cannot alone carry a Sixth Amendment claim without regard to the other Barker criteria.” 8

Harris argues that the trial court erred because it failed to consider if the delay in this case was uncommonly long and because it did not assign any weight to the delay. As our Supreme Court has said, “[i]t is important that trial courts not limit their consideration of the lengthiness of the pretrial delay to the threshold question of presumptive prejudice and remember to count it again as one of four criteria to be weighed in the balancing process at the second stage of the Barker-Doggett analysis.” 9 Here, the trial court did not go beyond the threshold analysis to consider the length of the delay as part of the four-part balancing process, and thus did not consider if the length of delay was uncommon 10 or assign any weight to the length of the delay. The state admits that, notwithstanding the omission from the trial court’s order, the pretrial delay in this case was uncommonly long and weighs heavily against it. 11 Accordingly, “[t]o the extent the trial court overlooked this factor in the four-factor *567 balancing process, it erred.” 12

(ii) Reasons for the delay. The second factor of the Barker analysis requires consideration of “the reason for the delay and whether this is attributable to the defendant or the state.” 13 The trial court found that the state did not attempt to deliberately delay the triad, but that there was no explanation for its three-year and ten-month delay in failing to seek an indictment. The trial court also found that the state’s negligence was the reason for the pre-indictment delay and weighed that delay slightly against the state. However, the trial court assigned the reason for the delay following the indictment “to neither party.”

As a rule, “[w]here no reason appears for a delay, we must treat the delay as caused by the negligence of the State in bringing the case to trial.” 14 The state’s negligence in causing the delay is generally considered relatively benign. 15 Harris argues that the delay in this case was nevertheless not benign because the state’s conduct was not inadvertent. “[D]elays resulting from deliberate decisions made by the State . . . cannot be considered benign and must be weighted more heavily against the State.” 16 In support of his argument, Harris points out that police investigators had contacted the district attorney’s office many times in an effort to ensure that the office took action in prosecuting the case. The trial court acknowledged this evidence in its order, but found that the government’s delay was nevertheless not deliberate. That members of the district attorney’s office were aware of the case against Harris does not show that their delay in indicting Harris was necessarily more than negligent, and we defer to the trial court’s findings in this respect.

We cannot, however, conclude that the trial court properly attributed the delay following the indictment to neither party. At the hearing, the trial judge indicated that the delay after the case was transferred to the court shortly after the indictment was “my responsibility.” Nevertheless, the primary burden is on both the *568 prosecutor and the court to bring the case to trial, 17 and the state bears the ultimate responsibility for its dockets. 18 Accordingly, as with the pre-indictment delay, the trial court should have weighed the post-indictment delay against the state, although the reason for that delay was not shown to be more than unintentional and relatively benign. 19

(iii) Assertion of the right. A defendant may benefit from a delay in trial, and we have “recognized that a defendant has a responsibility to assert his right to a speedy trial.” 20 Given that more than four years passed from the time of his arrest until Harris asserted his speedy trial rights, the length of that delay would normally be required to be weighed heavily against him. 21 Further, “a defendant may assert his constitutional right to a speedy trial at any time after he is arrested; he need not wait until indictment.” 22 Nevertheless, “a trial court has the discretion to mitigate the weight given this factor when a defendant fails to assert his right during the period between arrest and indictment if he was out on bond and without counsel.” 23

Here, the trial court weighed Harris’s delay in asserting his speedy trial rights against him, but only slightly, noting as mitigating factors the lengthy delay between the arrest and the indictment and that, once Harris retained counsel, his attorney filed a demand within two months. We find no error in the trial court’s analysis and weighing of this factor. 24

(iv) Prejudice to the defendant. In analyzing this last factor, the trial court found a presumption of actual prejudice arising out of the more than five-year pretrial delay. It then considered the three types of prejudice associated with an unreasonable delay before trial, which are oppressive pretrial incarceration, anxiety and concern of the accused, and the possibility that the defendant’s defense will be impaired. 25 The trial court concluded that lengthy pretrial incarceration and anxiety were not at issue, and it then considered if Harris’s *569 defense had been impaired by the delay. As the trial court noted, “the inability of a defendant adequately to prepare his case skews the fairness of the entire system.” 26

The record shows that Harris was alleged to have pointed and shot a handgun in the direction of a police officer. At the hearing on the motion to dismiss, Harris proffered that the incident occurred at a hotel formerly known as the Executive Inn, which had later been condemned. Therefore, Harris contends, he is unable to conduct any meaningful investigation. He also points out that although officers took statements from witnesses, the front desk clerk was not interviewed and remains unidentified. The state counters, as the trial court noted, by showing that the hotel building remains accessible and that Harris did not demonstrate what the front desk clerk could have offered on behalf of the defense. Generally, “[t]o prove prejudice due to the unavailability of. . . witnesses, the defendant must show that the unavailable witnesses could supply material evidence for the defense.” 27 Giving deference to the trial court’s findings, we conclude that it did not err in ruling that Harris did not show actual prejudice. The trial court went on, however, to state, that “Harris has failed to demonstrate actual prejudice” and “ [ble-cause the Court weighs this last factor more heavily, [Harris’s] Motion is hereby denied.”

In a case involving a similarly lengthy pretrial delay, the Supreme Court of Georgia concluded that a defendant’s inability to make a particularized showing of a decreased ability to present a defense could not be weighed heavily against him. 28 “Although the passage of time is not alone sufficient to sustain a speedy trial claim, greater pretrial delays simultaneously increase the degree of prejudice presumed and decrease the expectation that the defendant can demonstrate tangible prejudice to his or her ability to present a defense.” 29 Accordingly, “[t]o the extent that the trial court found to the contrary, it was in error.” 30

(c) Balancing the factors. The trial court balanced the Barker factors by finding the length of the delay “attributable” to the state, weighing the reason for the delay slightly against the state, and weighing the assertion of the right to a speedy trial slightly against Harris. The trial court then noted that Harris had failed to show *570 actual prejudice and, weighing this factor “more heavily,” denied Harris’s motion to dismiss the indictment.

We review the trial court’s balancing of the four Barker factors, and its ultimate judgment, for abuse of discretion. 31 But “where . . . the trial court has clearly erred in some of its findings of fact and/or has misapplied the law to some degree, the deference owed the trial court’s ultimate ruling is diminished.” 32 We find no error in the trial court’s findings of fact, but we conclude that the trial court erred in attributing the reason for the delay following the indictment to neither party, in failing to reconsider the length of the delay in applying the four-part Barker test, and in weighing heavily Harris’s inability to come forward with evidence of actual prejudice to his defense. We conclude that the latter two errors were material in this case. We cannot, however, conclude that the trial court had no discretion to reach a different judgment, 33 particularly given the length of the delay and that Harris’s assertion of the right to a speedy trial was mitigated. 34 Therefore, we vacate the judgment and remand the case to the trial court with direction that it exercise its discretion anew and, upon making findings of fact and conclusions of law consistent with Barker, enter its written order on Harris’s motion to dismiss. 35

Judgment vacated and case remanded with direction.