Mióta ilyen lassú a feltöltési sebesség?

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.

Because Hungarian usually leaves out the verb van (is) in the present tense, third person singular, when the sentence is of the type X is Y.

So:

• A feltöltési sebesség lassú. = The upload speed is slow.

There is no spoken or written van here.

This omission happens very often in Hungarian:

• A ház nagy. = The house is big.
• Ő orvos. = He/She is a doctor.

But in other persons or tenses, the verb appears:

• Én lassú vagyok. = I am slow.
• A sebesség lassú volt. = The speed was slow.

So in your sentence, the hidden structure is basically:

• Mióta [van] ilyen lassú a feltöltési sebesség?

Ilyen means like this, this kind of, or with adjectives, often this/so ...

In this sentence:

• ilyen lassú = this slow / so slow

So it is emphasizing the degree or quality of slowness.

Compare:

• lassú = slow
• ilyen lassú = this slow, so slow like this

A close alternative would be ennyire lassú, which focuses even more clearly on degree:

• Mióta ennyire lassú a feltöltési sebesség?
  = Since when is the upload speed this slow / this much slow?

Both are natural, but ilyen lassú is perfectly normal here.

It is an adjective.

It describes a feltöltési sebesség (the upload speed), so the structure is:

• the upload speed
  • is slow

That is why Hungarian uses lassú (slow), not lassan (slowly).

Compare:

• A sebesség lassú. = The speed is slow.
• Lassan tölt fel. = It uploads slowly.

English speakers often confuse these because English uses slow both adjectivally and sometimes informally adverbially, but Hungarian keeps them separate more clearly:

• lassú = slow (adjective)
• lassan = slowly (adverb)

It is made from:

• feltöltés = upload / uploading
• -i = an adjective-forming ending meaning related to
• sebesség = speed

So:

• feltöltési = upload-related
• feltöltési sebesség = upload speed

This is a very common Hungarian pattern in technical vocabulary:

• letöltési sebesség = download speed
• fizetési mód = payment method
• szállítási idő = delivery time

So feltöltési sebesség is not a random phrase; it follows a productive Hungarian pattern.

Because Hungarian treats the upload speed here as a specific, identifiable thing.

• a feltöltési sebesség = the upload speed

This is natural when talking about the upload speed of a connection, device, or service already understood from context.

Hungarian uses the definite article very often with concrete nouns when the speaker has a specific item in mind.

Without a, the sentence would sound unnatural here.

Hungarian word order is much more flexible than English word order, and it is strongly influenced by focus and sentence structure, not just by grammatical roles.

Here the sentence is naturally organized as:

• Mióta = question word, placed first
• ilyen lassú = the predicate description
• a feltöltési sebesség = the subject

Because there is no visible is, the structure may feel unusual to an English speaker. But in Hungarian it is completely natural.

A rough literal order would be:

• Since when this slow the upload speed?

That sounds wrong in English, but the Hungarian structure is fine.

Yes. In practice, it can suggest either one, depending on context.

Hungarian often uses the present tense where English prefers a present perfect for a continuing state.

So Hungarian says:

• Mióta ilyen lassú a feltöltési sebesség?

But English may naturally translate it as:

• Since when is the upload speed this slow?
• How long has the upload speed been this slow?

Both capture the idea that the slowness began earlier and is still true now.

Yes. That would also be correct, but the meaning changes slightly.

• Mióta lassú a feltöltési sebesség?
  = Since when has the upload speed been slow?
• Mióta ilyen lassú a feltöltési sebesség?
  = Since when has the upload speed been this slow?

The version with ilyen adds emphasis: not just slow, but this level of slow.

So if you are surprised or annoyed by how bad it is, ilyen is very natural.

Yes, it sounds natural and normal.

It is neutral everyday Hungarian, and it would fit well in conversation about internet service, mobile data, or technical problems.

Depending on tone, it can sound:

• genuinely curious
• mildly annoyed
• openly complaining

That is similar to English: Since when is the upload speed this slow? can be neutral or frustrated depending on how you say it.

A simple pronunciation guide:

• Mióta ≈ mee-YO-ta
• ilyen ≈ EE-yen
• lassú ≈ LAH-shoo
• feltöltési ≈ fel-TOEL-tay-shee
• sebesség ≈ SHE-beh-shayg

A few useful notes:

• Hungarian stress normally falls on the first syllable of each word.
• ly in modern Hungarian is pronounced like j.
• s is pronounced like English sh.
• sz is pronounced like English s.

So sebesség starts with a sh sound, not an English s sound.