Potentially, yes. The minimum officially recommended RAM capacity for UE 5 is 32 GB.
However, there are other ways you can improve the editor performance without upgrading your RAM:
Set the editor to run on high performance from Windows Settings > System > Display > Graphics
Open up the Nvidia Control Panel, and from the Display Mode section, switch to the Nvidia GPU Only mode.
Inside the editor, reduce the project’s scalability from Quick Settings (The Settings menu on the right side of the toolbar at the top, with a gear icon next to it) > Engine Scalability Settings