30mbps is pretty shocking really, hope you're not paying BT much for that.
In 2023 I notice work in my pavements, fibre was being put in - noted.
I am with BT and did get new router from them last year, a smart hub 2, happy with it.
I have about 65mbps and a wifi check on my phone just now I get that, it's copper, so is what it is but it's not caused a problem, yours should not drop to 3mbps Rich.
Consider getting Deco Mesh units, I have 2, app controlled and work great.
I was paying £40 but I saw a Sky offer and this prompted me to look into it, my exit fee with BT was £200 !! So armed with no choice, haha, I am stuck but I now am able from the 23rd to get full fibre, so 900mbps and for £45 a month, 24 month contract, I am happy.
Also a quality laptop does help, all to do with the processor and mine has an i7, think you're looking at £750 though bud.