Mióta ilyen lassú a feltöltési sebesség?

Since when has the upload speed been this slow?

Breakdown of Mióta ilyen lassú a feltöltési sebesség?

• az: the
• lassú: slow
• mióta: since when
• ilyen: such; this kind of

Questions & Answers about Mióta ilyen lassú a feltöltési sebesség?

What does mióta mean exactly?

Mióta literally means since when, but in many contexts it is also naturally understood as how long has ... been ...?

So:

• Mióta ilyen lassú a feltöltési sebesség?
  = Since when is the upload speed this slow?
• In natural English, this may also be expressed as
  How long has the upload speed been this slow?

Hungarian often uses mióta for a state or action that started in the past and is still true now.

A typical answer might be:

• Tegnap óta. = Since yesterday.
• Két napja. = For two days.

Why is there no word for is in the sentence?