RabidMongoose Just today, I had a new Pixel 8a arrive. I ran Wi-Fi stability tests before flashing GrapheneOS onto it, and had only one wifi drop. I turned off the "Adaptive Connectivity" in the original OS and that solved that issue. However, after flashing GrapheneOS onto this brand new from amazon pixel 8a, the exact same Wi-Fi dropping issue is there.
At this point, I believe it is safe to say that the issue is not my home wireless network, but an issue with the OS not having the option to disable "Adaptive Connectivity."
I used a Pixel 3a running GrapheneOS on my home Wi-Fi network for a year and change, and since then a 6a, same network (two APs in bridge mode). On both Pixel devices, running GrapheneOS, I have experienced zero Wi-Fi disconnections per day, also zero per week, and I think I can say zero per month.
It is not clear that a baseline drop rate of "just" one disconnect in a small number of hours, regardless of Wi-Fi settings, means that the Wi-Fi network environment is fine. I suspect many users of this forum can report zero sudden disconnects on multiple GrapheneOS devices. So, based on reporting so far, it's not obvious what you are observing.
Can you provide detailed information on some test you can run that fairly reliably results in disconnects? Maybe some people here can try on various Wi-Fi networks (home, maybe corporate).