Yep,I wouldn't recommend to upgrade if you really love Blockland unless your going to buy a driver of some sort.
People have probably already told you this but you don't buy drivers.
The idea of buy is probably because you decided to search for driver updates and you probably saw a webpage for some ripoff software called driver download or driver optimizer pro, that is software that cost money (and is most likely a virus).
What you need to do is find out you graphics vendor, it might be AMD or nVidia, or it may even be some intel integrated graphics, then you go to AMD or nVidia's site, usually they have a section on the top called drivers, if not its in the support section.
From there you select your Graphics Card Series > Model > and then you download the Drivers and install them.
You will need to restart once you install the drivers, if you did this and didn't restart, that's why the gpu drivers where not detected.
Windows 10 isn't to blame for this, its more probable that your gpu vendor has not updated their drivers to be compatible with Windows 10, I'm saying this because usually if its a nVidia card or a AMD Card, they send drivers through Windows Update that are stable.
