Mario 64 is very square. How can I improve the image?

Libretro Lakka
#1

I have an orange pi pc with lakka. The 64 mario in n64 is very checkered. How can this be improved?

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tenho um orange pi pc com o lakka. o mario 64 no n64 esta muito quadriculado. tem como melhorar isto?

#2

You need to go in the core options and change the resolution, then relaunch the core.

#3

Now this good thank you