@BamesJond,

Unfortunately, looking at the patch notes for the 1.3.0 firmware, you cannot downgrade from this version. Its not the end of the world however, this just means that the optimizations that were made were relatively significant.

It is strange that its described as chaos lol

Normally when issues occur with your network, it will happen in batches, where devices will disconnect all at once, or a wif-fi band will go down. I feel like it is not common to see so many issues across all aspects of the network. For this reason, while inconvenient, you may have the best luck resetting your network as this would clear any settings or incompatibilities that were accidentally introduced.

You may check the logs of your router from the WebUI to see if there are any errors or notifications being given that could indicate what the cause is.