Sonoma. Can’t save OCLP settings. Not so fast macOS settings

Hi there! I’ve installed Sonoma on 2014 MacBook Air A1466 with 1.3Ghz CPU and 8Gb of RAM (most part of them with 4Gb). It was at first I was installing it :)

I guess laptop works pretty well. Safari opens all sites (it was impossible on 10.9.5). There is no freezes in Safari, YouTube 720p in full screen.

However, there are a few I don’t like at this moment.

1. I’ve seen on YouTube that I can hide source choice before loading. But guy on video said it doesn’t works on his machine (I guess 2016-2017 mbp with OCLP 1.5) and it doesn’t work on mine with OCLP 2.0.2. I’m turning it off, or set 0 seconds. But it doesn’t save settings…

2. System settings are pretty slow. Click on some tab needs a few seconds to load settings list. I understand that it wouldn’t most popular app on this laptop. But it makes me a little angry. Works almost like my old iPad Mini 3 :)

What do you think? Can I make this machine a little faster and save that settings? Or should I install Ventura to get this machine faster?

Thank you for your answers!