@GrizzGolfIt would be easier to fix if it were a server side issue as then they could just rebuild a new server executable and deploy that to their could(s).
If it is client side, they need to patch the clients. This would be easy in a hotfix for PC but as they also have to do that for consoles, they have to re-certify the binary for all console versions, which could take days.
Right now, they did not tell us if it is client or server side AFAIK (just because it happens for multiple players at the same time does not mean it is a server side issue).
To me it looks MUCH more likely to be a client side problem as this happens for me the stuttering intensifies during EOR while showing the credits (open the performance overlay by putting: 'perfoverlay.drawgraph 1' in the console) and watch the spikes there.