I'm used to newer computers, so Visual Studio 2008 was my favorite Visual Studio. With VS 2010 and later, Microsoft decided to scrap the existing Win32 based UI and rewrite it in WPF, which made it take 20 seconds to start instead of less than a second. Even after it's started, it's far less responsive than 2008. If only Microsoft offered a "Visual Studio 2008 but with modern standards support" product...

Every IDE is a sluggish piece of garbage after Delphi 7.

I'm curious if you've used Lazarus and what you think about it. I have not used enough similar IDEs to compare it (or maybe just forgotten how it was) and didn't have access to Borland tools back in the day. One crazy thing I remember about Lazarus is how it can compile the IDE quite fast (given its codebase size) when installing plug-ins.

Unfortunately no, had no use case for it in an industry dominated by Python and C++. Wouldn't be surprised if Lazarus is very fast and pleasant to use, and I think the problem with more popular IDEs lies in underlying technology: C++ is traditionally very slow to compile and analyze, and many popular languages are too dynamic for reliable autocompletion to be feasible. When I briefly worked with C# and Java in 2000s the IDEs were very much fully functional (compared to C++ at the time), but sluggish enough to be unpleasant without a powerful PC which I did not have — and Delphi ran fast on cheap hardware.