Took me a while to find something suitableĪnd it get's me acceptable speeds. Just make sure you buy something that is really fast both in read/write and in communicating. You'll still not get the internal-drive-speeds but it will at least be much better.
The better way to do it is to buy a USB-C full speed external hard disk and plug that in instead. It works perfectly as long as you don't forget to insert the card before boot and try to launch a game without it in.