On Windows 11 with 12 identical tabs and 3 extensions, Task Manager shows Chrome at 2.62 GB vs Edge at 2.41 GB after 10 minutes idle. If you’ve got your own numbers or a repeatable benchmark (especially 20–30 tabs or media playback), what are you seeing and does that about 210 MB gap persist?
Ran this on W11 with 25 tabs and 3 extensions; after 10 min idle Chrome about 3.0 GB vs Edge about 2.8 GB, and adding one 1080p YouTube for 5 min pushed Chrome +400 MB vs Edge +260 MB. Turning on Memory Saver (chrome://settings/performance) or Sleeping Tabs (edge://settings/system) shrank the idle gap to about 80 MB; without them, your about 210 MB delta tracks what I see. Are your extensions identical across both?