My ThinkPad with 32GB of ram with 5+ instances of Rider, and DataGrip, VSCode, all open, switching between instances is quick. (checks number of source files for top 3 projects I work on daily) with 4684 files, 10230 files, 7211 files. (no npm junk)

Switching between Visual Studio is 15-20 seconds of wait time while it decides if any files have changed.