Review on Gigastone 256GB Micro SD Card | 4K Video Recording | Compatible with GoPro, Action Camera, DJI, Drone, Nintendo-Switch | Up to 100/60 MB/s R/W Speed | MicroSDXC Memory Card UHS-I U3 A2 V30 C10 | Includes 5-Yrs Free Data Recovery by Brent Borseth

Got this to test instead of other big brands as it was cheaper and can gladly say I'm glad I did. I used my Samsung Galaxy Tab E and downloaded several games and apps and they all ran faster than my old card. Then plugged into my new Nintendo Switch and all my digital games loaded with no issues and all games run much smoother than other brands games. This may be due to the A1 V30 rating, but I'm not an expert, all I can say is that I'm very happy with this purchase. Got 256GB A1 V30 U3 Class 10.