Does it work OK with an SD card? I've got the 10" Yoga 3 Pro Tab and SD usage is incredibly sluggish even for photos or comic reading. The rest of the tablet is great, but if you try to use the SD, it shits a brick. Tested with multiple sizes/makes of SD.
I haven't noticed it being slow. It's got over 100GB of video on there and it seems fine to browse and watch. I've not got any apps installed to SD so can't comment on that.
It's a pretty fast card, Samsung Evo UHS-1 (think that's the next above the old class 10)
I have one of those. Pretty nice. I mainly use it for watching Plex and a bit of music and it's good for that. Takes 128GB microsd card ok.