Until the 30th of April, use code BIRTHDAY40 for 40% off any course, BIRTHDAY20 for 20% off any bundle and BIRTHDAY15 for 15% off your first year of Dometrain Pro: https://bit.ly/4aUVR8l Become a Patreon and get special perks: https://www.patreon.com/nickchapsas Hello, everybody, I'm Nick, and in this video I want to talk about a performance regression in .NET 9 regarding the Add method of Lists which is only happening on MacOS. Help Microsoft troubleshoot it: https://github.com/dotnet/runtime/issues/101437 Workshops: https://bit.ly/nickworkshops Don't forget to comment, like and subscribe :) Social Media: Follow me on GitHub: https://github.com/Elfocrash Follow me on Twitter: https://twitter.com/nickchapsas Connect on LinkedIn: https://www.linkedin.com/in/nick-chapsas Keep coding merch: https://keepcoding.shop/ #csharp #dotnet