Xcode 11 debugger is extremely slow - A known problem?

Question

Since I updated to the latest Xcode version 11.0 (11A420a) the debugging is extremely slow and cumbersome.

EDIT: After updating to 11.1 GM (11A1027

Answer 1

Well I had the same problem and recently figured out that I just forgot to disable diagnostics for my scheme

Open your run configurations -> Manage schemes -> Edit scheme -> Run -> Diagnostics tab

Answer 2

Please try to uncheck: Parallelize Build on each target in Edit Scheme. It 'll save time to build If your project has many targets.

Edit Scheme: