Slowdown of using Rails/RootPathnameMethods

[abratashov]

After enabling new cops I've found that some part of my codebase were fixed according to Rails/RootPathnameMethods:

Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f }
# =>
Rails.root.glob('spec/support/**/*.rb').each { |f| require f }

After that I've found that tests slowed down by 20 seconds:

1)
Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f }

Finished in 2 minutes 18.7 seconds (files took 3.57 seconds to load)
3105 examples, 0 failures, 70 pending

2)
Rails.root.glob('spec/support/**/*.rb').each { |f| require f }

Finished in 2 minutes 50.7 seconds (files took 3.58 seconds to load)
3105 examples, 0 failures, 70 pending

So, I've disabled this cop :(

P.S.

Rails 7.2
Ruby 3.4.1

#.rubocop.yml 

inherit_from:
  - .rubocop_todo.yml

require:
  - rubocop-rails
  - rubocop-rake
  - rubocop-performance
  - rubocop-rspec
  - rubocop-rspec_rails
  - rubocop-factory_bot
  - rubocop-capybara
  - rubocop-minitest
  - rubocop-obsession
AllCops:
  NewCops: enable
  TargetRubyVersion: 3.4.x

# Gemfile
  gem 'rubocop', '~> 1.70', require: false
  gem 'rubocop-capybara', '~> 2.21', require: false
  gem 'rubocop-factory_bot', '~> 2.26', require: false
  gem 'rubocop-minitest', '~> 0.36', require: false
  gem 'rubocop-obsession', '~> 0.1', require: false
  gem 'rubocop-performance', '~> 1.23', require: false
  gem 'rubocop-rails', '~> 2.29', require: false
  gem 'rubocop-rake', '~> 0.6', require: false
  gem 'rubocop-rspec', '~> 3.3', require: false
  gem 'rubocop-rspec_rails', '~> 2.30', require: false