ODBC connection Windows 8.1 IBM system i

I have an ODBC connection from my Windows 8.1 desktop to my IBM AS400 system i machine.  I link tables from the AS400 to Microsoft Access for queries/reports.  Just a few months ago I went from running queries which took an average of 10 - 20 seconds to produce the records to now its taking 4 to 5 minutes.  The queries I'm running are monthly queries so its generating the same about of data plus I don't have a lot of date on my system i to begin with.  Any ideas as to what would cause this delay?  

A couple of things I've already tried:  I've turned off the tracing option in the ODBC setup.  I've also changed the WebClient start up type to Automatic instead of Manual.

Also, the OS system of the IBM is OS 7.1. and my windows OS is 8.1.
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Kelvin SparksCommented:
Are you aware of any changes to the IBM machine, your PC or the network around the time that increase occurred?

Have you updated any of the version you used around then?

Typically, these thing can happen with an environmental change. Small increases in data can make that difference as well - usually due a join being inappropriate. Is the sql executed on the IBM machine or the PC - i.e. is the query for the report (assuming some sql is involved) at the PC end or IBM end. If PC end, can it be moved (either fully or in part) to the IBM?

Vitor MontalvãoMSSQL Senior EngineerCommented:
Maybe you just need a reindex in Access.

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RCL_BurcoAuthor Commented:
I'll try the reindex.  No changes have been made on the environment changes to either the PC or IBM system.
Vitor MontalvãoMSSQL Senior EngineerCommented:
So, really needed a reindex, I guess.
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