I have a powerful MacBook Pro M2 Max with 32 GB of RAM. I updated it to macOS 26 since that it became a lot slower than my MacBook Air M1 with just 16 GB of RAM that I left on macOS Sequoia 15.7.x… What an irony given that my MacBook Pro has way better hardware specs.
They do it on purpose and they're being very blatant about it now
Someone will maybe come along and tell you it's just "indexing" slowing it down and to wait a few weeks lol. That's the common gaslighting method
Do you happen to have an app on this list open (https://avarayr.github.io/shamelectron/) ?
There is a bug in Electron caused by the use of a private API that slows down macOS 26 significantly. It’s fixed in Electron but not all Electron apps have updated to the new version yet. Apparently it’s fixed in macOS 26.2