Review on 📷 Video Pro SD Card UHS-II 128GB SDXC Memory Card U3 V60 A1 - Extreme Performance for Advanced DSLR, 4K, 8K, 3D, Full HD Video, R/W Speeds of 265mb/s & 120mb/s by Darryl Duncan

I bought these cards for my Canon R6. I was a little concerned that the write speed would be slow as the camera flushes its buffer to disk, but I was very impressed. During a large photo series of about 50 images in a few seconds, the buffer could write to the cards within seconds. I didn't notice any delays or delays that prevented me from completing one package at a time.