for people that use truenas with nfs to store video for hikvision camera, are downloading playback from the camera very slow?

[Spirch]

it might be normal but I would like to ask, right now i find it annoying and if it's not then i would like to fix it.

is it normal that downloading a video playback from the camera api/isapi which record to a truenas using nfs is about 1.5MB/sec?

in my example the camera used is DS-2DE4A404IW-DE

using this to find a playback

Code:

curl -f --anyauth --user user:pass -X POST -d "<CMSearchDescription><searchID>C92DC285-8F30-0001-40C6-F0EFA8FB18B5</searchID><trackList><trackID>101</trackID></trackList><timeSpanList><timeSpan><startTime>2022-12-22T00:00:00Z</startTime><endTime>2022-12-22T23:59:59Z</endTime></timeSpan></timeSpanList><maxResults>100</maxResults><searchResultPostion>0</searchResultPostion><metadataList><metadataDescriptor>/recordType.meta.std-cgi.com</metadataDescriptor></metadataList></CMSearchDescription>" "http://192.168.40.40/ISAPI/ContentMgmt/search"

using this to download it

Code:

curl -f --anyauth --user user:pass -X GET -d "<downloadRequest><playbackURI>rtsp:/192.168.40.40/Streaming/tracks/101/?starttime=20221222T144808Z&amp;endtime=20221222T145546Z&amp;name=ch01_08000100148000000&amp;size=260587520</playbackURI></downloadRequest>" "http://192.168.40.40/ISAPI/ContentMgmt/download" --output download.mp4

ouput is

Code:

% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                Dload  Upload   Total   Spent    Left  Speed
54   389    0     0  100   211      0  17958 --:--:-- --:--:-- --:--:-- 19181
100  248M  100  248M  100   211  1459k      1  0:03:31  0:02:54  0:00:37 1464k

video length is 7m38s

the disk in question is a WD Purple 4TB Surveillance Hard Drive
I have 4 cameras recording to it 24/7, total about 2.5MB/sec write

if it matter, the nas is 99% used by the camera and the component is

E3C226D2I - E3-1220 v3 - 16gig​