Review on 📷 Gigastone 128GB Micro SD Card with [5-Yrs Free Data Recovery]: Ideal for Nintendo-Switch, GoPro, Action Camera, DJI. Supports 4K UHD Video & R/W up to 100/50MB/s. UHS-I U3 A2 V30 C10 by Jeff Drollinger

This card tests about 50MB/s write, 90+ MB/s read with the Blackmagic Disk Speed test, but it fails when used in Insta 360 One X after about 14-20 minutes. Recording at "speed too low". This camera records two files simultaneously at around 6MB/s each, but the simultaneity of something else prevents the Gigastone from delivering the promised results. After trying to contact customer service: no support available. They contacted me, asked what resolution I was recording the video in, then fell silent. A star. For the same money you can buy a solid brand.