The above issue was solved after changing a map with size and resolution from
4000 X 4000 (at 0.0500) to 200 X 200 (at 0.1)
That means it works seamlessly in my case with small maps but larger map is
slows down and finally hangs the system.
Am is suppose to upgrade my hardware? or is there any setting to make map
compatible with the navigation stack?

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