well is ADSL1 that bad? in most cases (non video on demand) bandwidth is never the problem. no matter how good your bandwidth is as soon as the latency is bad, it won't get better.
There are times when my mobile speeds degrade to around 1-2Mbps (typical ADSL1 sync speeds), with variable latency depending on how much throughput is being used (typical ADSL1 experience). Webpages (being the insanely bloated things that they are today) stop loading at that point, and I have to wait for my phone to sync to a different tower. This often happens during my commute when I hit congested towers. It's annoying that the experience on a 56k dialup connection in 1999 was better than it is on a 4G mobile phone in 2019.
Yes, ADSL1 is that bad. 8Mbit/sec is the best case, but closer to 1 or 2 is common depending on distance from exchange. About a 30ms latency penalty, IIRC.