I'll also be trying this again with 266MB for the EFI system partition. The reason is because Stuart earlier mentioned that the minimum “proper” FAT32 partition (at least 64K clusters) is ~133MB—it is actually ~266MB. He multiplied incorrectly. It
is ~33MB for 512-byte sectors, so it is ~33MB * 8 (~266MB) for 4096-byte sectors. I'll see if anything is any better with 266MB or if we're about the same.
I'll also be trying this again with 266MB for the EFI system partition. The reason is because Stuart earlier mentioned that the minimum “proper” FAT32 partition (at least 64K clusters) is ~133MB—it is actually ~266MB. He multiplied incorrectly. It
is ~33MB for 512-byte sectors, so it is ~33MB * 8 (~266MB) for 4096-byte sectors. I'll see if anything is any better with 266MB or if we're about the same.