I am capturing and dividing the whole desktop image into 256 small image blocks,and sending them to LS server in base64 foramt and again I am extracting and joining them as a single image at LS Client side this is my original scenario.

And as you said to check a single image block ( means a single field in my Item), in that case when I am pushing Image blocks onto server they all are pushed randomely (means the 1st field is not going update first,last ie.256th field is not going to up date in last,. They all are updated randomely).

So,when I am checking with single image block the LS server is taking almost same amount of time(used to take push all image blocks) to push the data (image block) onto client.

And I am running LS server on one machine and checking the data by running client on other machine.