UPDATED

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It will freeze, To fix it you need to get "PKMN-NTR" which is basically a realtime PKHex.

6: While still on the home menu (Wait til its connected to internet - Top Left), Open PKMN-NTR.exe, Enter your IP and just click Connect,



Conclusion: Whatever magic PKMN-NTR sends to the 3DS, Makes the INTERNET always stay connected while ingame resulting in NTRViewer ALWAYS being connected!

EDIT: Apparently the magic is a NFC-Disabler which is probable. I'll try implement it directly into CTR-V so you don't even need PKMN-NTR.