Hey I have made a script to automatically run some staff e.g. Citra, RealVNC the turn GPD Win 3 + any smart phone to 3DS emulator with dual monitors.
Majorly for personal usage only, but if any one have a same need as me can try.
In below video you can see a simple demo.https://youtu.be/l-Dg2KB10AA
And the script and instruction are all in the github.https://github.com/Okoken/GPDWin3_CitraDualMon
Hope anyone can enjoy it!