I didn't have this issue on 23.0, but 23.1 now the GUI slowly becomes more laggy until it's annoying enough to make me restart, which then solves the laggy GUI issue, but then it slowly comes back as I work.
I am on a 2017 iMac currently. 4.2 GHz Quad-Core Intel Core i7, 64GB of RAM, 2TB SSD, and Radeon Pro 580 8 GB. This happens both with project files created in 23.0 and new ones created in 23.1.