I suspect that just as the initial game had quite a few patches, and then there have been changes to Karkand, we'll see some patching of Close Quarters. Compared to the Karkand expansion, Close Quarters is almost a new game with the amount of tweaks to both the play types with gunmaster and Conquest, but also the way the maps and environment changes as the game progresses. That will be putting a different strain on servers, connections and client PCs than the previous game. That might explain a little of Storm's stutter?
Server (not client) patch R26 gets loaded today, although that is primarily to do with the queuing for games broken as the Premium patch was introduced. So that's the third server fix in around a fortnight since CQ was added to the server files.