The Switch version of Bedrock has anti aliasing set to 2 permanently for some reason with no option to set it back to 1. This does not affect block textures as switch has texel anti aliasing option

Can be reproduced by looking at the edges of blocks and comparing it to Windows 10. The image looks the same as Windows 10 with anti aliasing 2 enabled and nothing like with it disabled.

It should be able to disable it for this version of the game to help with performance and to fix those white line artifacts on block edges