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The 1030 Plus might go some way to fix this:
"New Sony GPS Chipset (to match most other Garmin devices since 2019)"
"Now the calculation is something that Garmin says they’ve significantly improved here, via increasing the processor hardware. Specifically they said it should be in line with the Edge 830 now and significantly faster than the original Edge 1030."
then again:
"The main factor that’s probably worth complaining about is more the speed of the display. Compared to the Hammerhead Karoo or Sigma ROX12 units based on Android, it’s substantially slower and less responsive (those act like the phones they are)"
"Of course, the main reason Garmin uses the display technology they do is battery life. Specifically, conservation of it. Garmin claims upwards of 24hrs of runtime on the Edge 1030 Plus. Whereas the Karoo claims 12-15 hours depending on features."
If you don't care about power than etrex is generally what people end up with. I find them clunky and slow to use but they have better GPS than Edge devices, AA batts and seem more rugged. If you don't need all the bells and whistles you can use the cheaper models - they do much the same thing. Mine only really gets used as a backup device during races but I feel I might move it to primary spot for unmarked trail stuff because it responds quicker to direction changes.
Also, there's a whole Garmin thread and GPS thread
https://www.lfgss.com/conversations/127459/
https://www.lfgss.com/conversations/185085/