I tried the 60 FPS patch and doesn't work good to me, then i try the 30 FPS patch and this is my experience, I was playing around 4 hours yesterday, here's my PC specs:
-Ryzen 5 5600G
-16 GB RAM
-SSD M2 500GB
In the beginning all the tutorial in the sky islands was around 20 FPS, once you enter in a Shrine will be nice around 57 FPS, but once i return to the islands field it goes down to 20 FPS, then when i was in the hyrule field was the same, a lot of textures aren't rendered correctly in cinematics and some texture in the mountains and fields but nothing too much to worry.
Also if i desactivated the Vsync option the game become speed so fast but unplayable, i think this patch can be improved and optimized to help to reach the native performance as the Switch console, hope this update will be released soon.