UE4 running on sdxc card

Hi. I have limited storage space on my computer, and I want to have Unreal Engine 4 on it. However, I do not have enough space and would rather install it on my 64GB sdxc card. The card has a speed of 90 mb/s (I think), and has enough space to hold Unreal Engine. Would this be reasonable? I don’t want to have to run it in low quality mode and still have lots of lag, but a little lag is fine. Does anyone have any insight on this for me? Thanks for any possible help.

It shouldn’t affect the performance of the editor, but it would significantly affect loading times.

Okay. That is fine. I don’t use it much, but I like to have it, in case I have a sudden inspiration to make a game. Thanks.