Recently I needed to move some files from one laptop to another. Firstly, I used a stick that had NTFS on it and it failed to unmount/mount. It was my mistake. I know that NTFS is not the best choice. I formatted it to FAT32, but the transfer was extremely slow. So, I formatted it to ext4 and finally everything works as it should, but, of course, I won't be able to use these sticks with Windows machines, my audio system or TV. ExFat is another file system from Microsoft. Do you have the same problems with FAT32 and NTFS or it's just a problem with my USB sicks?