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Unfortunately, I can't understand the point about random updates of the image blocks and why this affects the delay.

When you tried with a single image block, you only reduced the "schema"...

As you have removed all bandwidth limits (which, with very huge data, could introduce significant delays)
and you haven't put any stringent frequency limit,
there is nothing in Lightstreamer that...

The Javascript Client Library was designed with textual data in mind; more generally, it was not designed with huge amounts of data in mind. Hence, we have no benchmarks for a usage of your kind. May...

Is 10 seconds the total time from taking the screenshot to seeing it displayed on the client? Is the client at 100% CPU during the process? Are you using the Javascript Client Library? (note that the...

May you please provide us with more details on the expected and observed behaviour? What makes you feel that the update sequence is unnatural?
Note that if your application sends 2-3 kb fields and...

A further bandwidth limitation is probably posed by the Metadata Adapter.
You use Remote Metadata and Data Adapters, right? If you use the Remote Metadata Adapter as it comes from our examples, then...

If the update length is so huge, then the bandwidth restrictions become important.
Indeed the Moderato and commercial editions differ on this aspect.
Note that your client requests a bandwidth...

I see that the connection is not really closed, but it is rebound 2 times in a few seconds (which is unusual), then it remains open until a page reload is performed.
Moreover, the "Content length...

No, there is no difference. We have to investigate the behaviour on the Allegro/Presto/Vivace version of your application in more depth.
Which connection do you observe it's closing? Client-Server...