Manafort and those "13 Russians" were indicted just a few months ago. They're already scheduled to go to trial in the next 4-6 weeks.
And any delays imposed in the process are usually done for the benefit of the DEFENDANTS.
Tell that to the defendents in the Shootout at the Twin Peaks Corral in Waco prosecutorial abuse.
Also note that it was Weasel Mueller wanting to stretch things out some in the ham sandwich indictment of the click bait Rooskies who decided to toy with the Weasel.