I would think, and I may be way off base here, the RCVR band-pass would 
have an affect on this also.

My 1000MP has INRAD filters with Very Sharpe skirts. When operating both 
JT65+9, I've seen decode times slow down a tad. I just assumed ( maybe 
incorrectly ) WSJT-X was looking at what I had set with the controls, 
having no way of knowing what mechanical IF filter settings I had engaged.

I don't know of a way to quantify the speeds in real time, so, this may 
be just confusing the issue :-(

For the most part, all of the new multi-pass enhancements have worked 
fine business for me; On the 1000MP and 2000D, apart from a time problem 
I had that later was found to be Windows insider pre-view update 
trashing my time settings.

73's
Greg, KI7MT



On 11/2/2015 16:10, Bill Barrett wrote:
> Hi Joe-
>
> My observation is that the total time to decode the received signals is
> influenced by the setting of the RX frequency.
> IE if setting the RX @ 300 Hz all decoding [65 & 9] proceeds rapidly.
> if setting the RX to 2K or above the JT9 prints are delayed significantly.
> My computer is a 4Ghz CPU with 8 Ex units.
> Hope this helps.
>
> Bill W2PKY
>
> On Mon, Nov 2, 2015 at 4:27 PM, Joe Taylor <j...@princeton.edu
> <mailto:j...@princeton.edu>> wrote:
>
>     Hi Bill,
>
>     I'm not sure that I understand your point.  In JT9+JT65 mode, JT9
>     decoding is attempted only at frequencies above the "blue line" marker,
>     set by the "JT65 nnnn JT9" spinner control.  Decoding is always started
>     first at the selected Rx frequency and mode, so the decode you care most
>     about -- presumably the station you're trying to work -- comes out first
>     among all those in its mode.  If you have a slow computer (or for some
>     other reason) some decodes come out after the top of the minute, it's
>     not a big concern.
>
>     Have I mis-understood what was bothering you?
>
>              -- 73, Joe, K1JT
>
>     On 11/2/2015 4:08 PM, Bill Barrett wrote:
>      > Hello JT Developers-
>      >
>      > Running 1.6.1 5910, noticed when mode is set to JT65 + 9
>      > and the RX frequency is greater than 1500 the JT9 decoding takes
>     a long
>      > time.
>      > If the RX is above 2000 and there are a few JT9 prints the last
>     one could
>      > come at second 59.
>      >
>      > Regularly decode signals -26 -27 -28.
>      >
>      > 73, Bill W2PKY
>      >
>      >
>      > On Mon, Nov 2, 2015 at 3:28 PM, Joe Taylor<j...@princeton.edu
>     <mailto:j...@princeton.edu>>  wrote:
>      >
>      >> Hi all,
>      >>
>      >> Here's an amusing screen shot.
>      >>
>      >> WSJT-X was running with 2-pass decoding enabled for JT65.  Note
>     the two
>      >> decodes of WB9OTX at Freq = 1856 Hz.  Evidently he changed his
>     Tx message
>      >> from "HA3LI WBtOTX -21" to "HA3LI WBtOTX 73" in
>     mid-transmission.  The
>      >> decoder gets the "73" message in its first pass, and the "-21"
>     message in
>      >> the second pass.
>      >>
>      >>          -- Joe, K1JT
>      >>
>      >>
>      >>
>     
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>      >>
>      >>
>      >
>      >
>      >
>      >
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