I can't feasibly turn off wifi, it needs to be on. I also can't predict when it will happen because it does seem random - although is definitely worse when I download things but that's not a guarantee.
In the last ~5 years I have not added any other wifi devices, they've remained pretty much the same, it isn't more or less busy than it was. I have tried wifi channels but this one appears to work best for us.
I don't believe it's the internet because of how incredibly quickly it reconnects, things like Discord don't even notice it has gone, however games which are my main usage, kick me out. It is a split second nothing more. It does appear to happen significantly move when I've been downloading in the last hour or two, it will then be unstable for the rest of the day. If you have any other suggestions I will try them but this has slowly got worse over the last year.
I would use a third party router however my network then acts very differently, third party routers don't seem to multitask well - right now I can stream/download/play games all at the same time and it seems to manage. I have used £200+ routers and been unable to do that, I don't know if that's shaping from talktalk or what but a slow download will grind everything to a halt with any router other than the talktalk one. I have tried many models over the years, cheap ones, top of the range ones, always the same problem with no ability to multitask.
As a last resort for me, trying a new piece of hardware is a viable option because the router is older, they do deteriorate after being so hot for years on end.
