That's such a typical MS "fix" – just preload it at startup. They've done the same with Office, SharePoint / IIS and probably other stuff too.

Is this also a React web application?

How can we make programs this slow in 2025 when people have ssd and nvme drives, people have 12-24-64 threads in the cpus, memory that is lightning fast and still we wait for crap to load? How is it that noone creates pushback on applications being this bad in the first place? We get to read articles on how someone made something 10x faster, but seldom anyone complaining about it being 1/10th of decent speed to begin with.

I think it was MS Access 2.0 that had some text on the back about being up to 100x faster than the previous versions, and to me that reads as "old was crap as hell", but some marketing person thought that was a super quote to put on the packaging. Perhaps it works, perhaps not.