Calibre slowness on Webdav

Hi all, I set up a cloud storage space with Webdav access and put on it the Calibre library. In this way I can share it with on different devices. It works but I noticed the things are a little slow. I know that Webdav is slow by itself but there is a huge difference while accessing the folders in the cloud via the Finder if compared to Calibre behavior. So I did some tests and collected the I/o information. Following the results of a test run.

Reads Count Bytes Read Delta reads Delta Bytes
1 Start 11279 36.624.145,00
2 Switch to My library 11792 37.865.863,00 513 1.241.718,00
3 Click on a line 11822 38.568.167,00 30 702.304,00
4 Close Panel 11861 39.272.338,00 39 704.171,00
5 Open Panel 11900 39.976.509,00 39 704.171,00
6 Click on line 11933 41.216.208,00 33 1.239.699,00
7 Right Click 11951 41.322.889,00 18 106.681,00
8 Close Panel 11990 42.623.485,00 39 1.300.596,00
9 Click on a line 12032 43.135.599,00 42 512.114,00
10 Right Click 12032 43.135.599,00 0 -
11 Right Click on a different line 12056 43.708.691,00 24 573.092,00
12 Swirch to Calibre Library 12179 44.127.570,00 123 418.879,00

What I did at 4,5,8 was to Open/close the panel where is showed the Book cover and summary.

In my opinion there is some unnecessary I/O in several points.
Why perform 42 Reads for 512.114 bytes while just clicking on a line with the preview panel closed?
In any case In my opinion there are several unnecessary reads from the disk that could be optimized.
I'll perform other tests and submit more results.

Thanks. Ciao.