I have found that there is a large community suffering from the problems with the WiFi-Bluetooth card Ralink RT-3290. It has been a problem since 2012-2013.
None of the solutions I've found is simple, effective and durable.
I managed, with great effort, some results. But when there is a kernel update, the problems return.
Can anyone provide a simple , effective and lasting solution?
Is there a project from Ubuntu's developers to attack the problem?