1) I use IntelliJ for my day job and find it much slower than Xcode 2) yes 3) I don't really use plugins in IntelliJ either - I do in VSCode but only because

1) I use IntelliJ for my day job and find it much slower than Xcode 2) yes 3) I don't really use plugins in IntelliJ either - I do in VSCode but only because it's pretty useless without them 4) Not sure what the problem is with this, but I will say I prefer Package.swift projects for anything that isn't targeting a UI runtime 5) App Store update process just doesn't play well with 8GB applications. Either delete it and re-install from App Store or use something like Xcodes.app