Hello, I have the same issue on 7 of my websites. (It’s the last time I use auto-update for sure ><).
I had done your recommendation with OceanWP 4.0.1 dev + Ocean Extra 2.4.1 dev + hosting Google Fonts locally + Clear cache = Nope it’s very very slow.
At first I’m wondering if it’s because my Child theme, I have done a test without (Theme only). And it’s the same.
I will hope for future updates FIX meanwhile I will use my websites without google fonts.
