Go 750 Review- POI issue?

pete1336 · Posted: Thu Jan 21, 2010 3:43 pm Post subject: Go 750 Review- POI issue?

I took delivery of my new Go 750 live yesterday. Overall, quite impressed, it's an improvement over my old 720 but probably only because it's capable of doing more. By this I mean the live services. I acknowledge they are a paid for subscription but I'm impressed with the idea.

Having upgraded to the latest app and map (no warning received re lack of space or problem encountered in that area) having done a full explorer back up first I then selected all of the POI's to display.
This morning I drove to work, only a distance of 8-9 mile and used the device for a trial run, see how it worked. I was very disappointed to see that the screen re draw or refresh was so low it rendered the device unusable. The screen would only update every 4-5 seconds. Past experience quickly suggested this may be a POI problem, not enough memory and the device was struggling (maybe). I therefore pulled over, deselected all POI's from map display and the screen refresh/redraw was back to normal. The unit was able to track my road position to my satisfaction.
I've since counted the POI's I'm trying to display. All told, including the default tomtom lot (not their speed cams) and the PGPS speedcams (uk speed zone complete) I have a total of 90 different POI groups.

Is this then the problem, do I have too many selected that the unit cannot display a decent framerate?

Im aware of the flash tool and will give that a try. Although I didn't try the earlier app/map combination I may reinstall and give that a try to see if it copes any better with the 90 POIs displayed. I'll post back my results if the flash tool doesn't work.

Any helpful comments appreciated.
Regards and happy and stress free motoring to you all.
Pete Question

PS The device only has 31.1mb of space left just in case that fact is relevant.

GerryC · Posted: Thu Jan 21, 2010 5:09 pm Post subject:

Why do you need so many on display? Confused

As you are trying to get the 950 to read every POI set each time it refreshes, I'm not surprised it takes ages.

Unless you actually need a POI displayed, it's best not to. For example, I only have motorway service areas and car parks displayed. For the camera alerts, use the "warn when near " function. This will show them when they are nearby and also alert you to their presence.
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pete1336 · Posted: Thu Jan 21, 2010 5:56 pm Post subject:

Hhmm, a reasonable question to ask. I guess I don't need them all. In fact I've removed about 10 so I'm down to around 80. If given the preference I would like to have as many displayed as possble. Why? For me it adds to the driving experience, I like to know what's around me as I drive nearby.
Has anyone here got 90 displayed with good screen refresh performance?

The other issue I don't like with the latest app is the way the info bar is displayed. The 720 display was much better in my opinion, more organised. The 750 doesn't offer the choice of customising the info bar the way I'd like.

PaulB2005 · Posted: Thu Jan 21, 2010 6:25 pm Post subject:

80. WOW

My 740 was noticably slower when i had 50 showing all the time. I reduced it to 33 PGPSW Speed Cams and 2-3 others such as Parking and Fuel. Much better now...

pete1336 · Posted: Thu Jan 21, 2010 7:13 pm Post subject:

Paul2005B,
thanks for your reply. It's becoming clearer that the more POIs displayed the more likely the user is to experience a reduction in performance.
Anyone have any thoughts on the info bar on the 50 range?

Darren · Posted: Thu Jan 21, 2010 8:07 pm Post subject:

At the end of the day, the POI's are there to allow you to navigate to them. You can enable those that you need on any particular day so you can browse the map and see them but you do not need to enable them in order to navigate to them?

TomTom need to consider a warning when so many categories are enabled as visible as clearly this will be at the detriment of the display refresh.
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Darren Griffin

pete1336 · Posted: Thu Jan 21, 2010 8:19 pm Post subject:

Two good points there Darren, thank you.

Andy_P · Posted: Thu Jan 21, 2010 8:59 pm Post subject:

MrT · Posted: Thu Jan 21, 2010 9:51 pm Post subject:

mikealder · Posted: Thu Jan 21, 2010 10:28 pm Post subject:

dhn · Posted: Thu Jan 21, 2010 11:00 pm Post subject:

Doesn't the application need gps signals to determine the speed and, if so, doesn't it stand that it can't show the speed when EPT kicks in, which is when the gps signal is lost?
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David

Andy_P · Posted: Fri Jan 22, 2010 1:15 am Post subject:

Sounds right to me... Smile

MrT · Posted: Fri Jan 22, 2010 9:14 am Post subject:

The unit intiially needs GPS signals to determine the speed and it will know the speed before it calibrates the EPS. From then the EPS sensors will detect any changes in speed and direction and these are added to the original velocity. It is just a case of whether TomTom choose to show this information. In EPS mode it does know when you speed up and slow down or go round a corner.
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Drivelux

Darren · Posted: Sat Jan 23, 2010 11:31 am Post subject:

I'm fairly sure the EPT system does not need GPS input before it can function. The solid state gyros are independent of GPS data.
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Darren Griffin

mikealder · Posted: Sat Jan 23, 2010 12:03 pm Post subject:

The sensor requires to be driven in a straight line for about a mile before the EPT will work, if you are constantly turning corners in a town/ city from setting off it won't work - Mike

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