I found Ventura to be a rocky upgrade generally, but I was able to resolve most issues, except some nagging issues with KM.
I have noticed that it seems to run slower over time, and that a reboot fixes that.
For example: I detect a key sequence and I replace it with a typed sequence. Right after reboot, it types quickly. But over time, it types more and more slowly. If I reboot, it's back to quick.
Similarly, I have a macro I use all the time that sends a series of command keys to a few different applications, and I noticed this also gets slower over time. After a reboot, it's back to quick.
It could be (I need to investigate more) that KM is also using more CPU all the time when this happens.
Curious if anyone else is seeing this.