Picked up a 64GB card for my kids Fire tablet a few weeks ago, finally had a chance to open it and get it ready. Pop it to my computer to format it and load some pics and videos and the useable formatted size is 27.4Gb. I know that there is some loss due to the file system but taking an almost 43% hit dosen’t sound right. Maybe a 27.4 for a 32GB card but not a 64. I pull it out and have the tablet format it and it’s up to 59.4GB…much better. Anyoen else come across this? I have a 128GB one for my camera and my computer gave me no problems.