GPS Tweaking

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Hi all,

I've noticed that my TT7 still ran a little behind with occasional lag as per the Raphael (but nowhere near as bad)

Thought I would start a new thread for those of thus that experience this to list there tweaks/changes and radio versions so that we can keep track of this.

When posting, please state
Radio Stack currently using
Navigation software and version
Tweaks applied.

Mine are as follows

Rom Version : 1.19.401.0 (51489) WWE
Radio Stack : 3.44.25.27
Protocol Version : 61.25t.25.19U
Nav System : TT 7.910.9185
Tweaks applied.
HKLM\System\CurrentControlSet\GPS Intermediate Driver\
Deleted Data for current and old log files

HKLM\System\CurrentControlSet\GPS Intermediate Driver\Drivers\
InputBufferSize dropped to 1024 (DEC)
OutputBufferSize dropped to 1024 (DEC)

HKLM\System\CurrentControlSet\GPS Intermediate Driver\Drivers\GPSOneDevice\
PollInterval dropped to 100 (DEC) this is MilliSeconds

Hope this helps others.


Cheers,


Beasty

Thanks! Will definitely try these once I get the chance to actually test the GPS while moving about, at least if it seems there's still some GPS-lag in this shiny-new-monster-of-a-phone

I have added the above info to the Wiki, as this thread will soon dissappear into the ether.

The Rhodium forums are starting to pick up pace now


Cheers,


Beasty

How did your tweaks improve the lag on the tp2 ?

I did not tweak yet. TOMTOM 7 runs reasonably... the lag in IGO can be up to 40 metres. Will your tweaks improve IGO also ( and google maps for example )??

Regards

It should work for any Nav app, as the reg entries modify the intermediate MS driver config.

Reducing the buffer sizes should reduce lag, I was 10 metres behind actual location on stock settings and am now approx 2 metres to spot on depending on speed and road type. (ie twisty country lanes not as accurate as straight roads)


Cheers,


Beasty

this may saound really stupid but what do you actually mean by

Deleted Data for current and old log files

do you mean delete the entries entirely in the registry or or delete the valuse of the entery or empty the files they point to. Sorry for being stupid

i'm stupid too .... i also like to know

everybody will stuck with stoopidity if they just waiting for people feed them. how about a few secs to search & discover the registry key path.

there are two registry strings under the given key.
"CurrentLogFile"=""

and

"OldLogFile"=""

btw this is a known hack for raphael & kaiser also but may not needed with different gps apps.

EEEEEH ..... if you would read correctly ... you should have figured out that was not the question.

Offcourse I have found the entries. The question was about what to do with them:

1) deleted the complete registry key
2) delete the value \windows\gpslogfile.txt

i read correctly even my english is not perfect
shown above is what it should be.