Access Slowness while accessing shares on mapped drives

Hail to all professionals,

I'm facing a peculiar issue while accessing shares presented on a File server mapped drive when using clients behind firewall.
The connection between the 2 networks seem fine however the culprit lies elsewhere.
I need your help identifying this issue' whereabouts since its affecting the user experience while accessing application from these clients.
Hani_SAAsked:
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K BCommented:
Has this always been the case?
Are you saying clients on the same LAN or across a WAN?
Are you just opening files or running executables?
Hani_SAAuthor Commented:
The issue dates way back.
I have the problem with all clients on my LAN while accessing the shares using WAN connection.
The problem is when accessing file or running running application that needs files from these shares
K BCommented:
What you are saying is ... this has never worked correctly?
Running applications is not recommended across a WAN.
Hani_SAAuthor Commented:
You see the idea here is that I have clients PCs on Site A querying files mapped on a file server in Site B.
The users are reporting very slow access while trying to connect to these shares to fetch reports from a certain application.
I checked the connectivity between the 2 sites and there is no latency nor disconnection on the microwave link
K BCommented:
Are you aware of this application working properly across a WAN?
Contact the author of the application to verify what you are doing is supported/recommended.
I have customers that seek out the same advice with the same issues you are reporting.
It ends up that the application was not designed to run this way.

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