@atmos:
I have tested now Igo8 without running the portsplitter (Igo8 is on com0 and 57600 baud) - seems tu run better without losing GPS. One thing i see now, is that the screen refreshes visible every ~40-60 seconds (screen is dark for 0.5 second)- but this is not a big problem for me.
It would be great if you are able to create a small menu or installation procedure for Igo8 only - i don't really want to use the original navigation software
Brightness control seems to work better without portsplitter (now updating in 3D mode is within ~10 seconds).
Thanks,
dreamy1