"It's really a matter of great frustration if you keep losing internet connection every now and then "

"My Internet connection keeps dropping; what can I do? "

KEEPS DROPPING would refer to one day/occasion, GOES OUT A LOT would refer to a repetitive pattern.

Uly, how KEEPS DROPPING would refer to one day??
Here KEEPS DROPPING implies it keeps happening? How can that be one occasion? Isn't it contradicting?

I don't understand this either
E.g. 'voice keeps dropping' means a 'repetitive pattern' during a telephone conversation.

The internet connection keeps dropping. (sounds ok to me)

What I mean is perfectly exemplified by grumblers example. The voice keeps dropping happens during A telephone conversation, or during the course of one incident, one day.

But the idea of “often“ isn’t contained in the pattern “keeps -ing.“ This more accurately renders “again and again” of something that started recently.

У нас Интернет постоянно обрывается = keeps going out

Also, the version with “a lot“ is a fact/warning, whereas the version with “keeps -ing“ is a complaint.