If your card is formatted to only display ~80-90 gb and its getting full, just expand the storage to all 128 gb. If you really have more than 60 gigs filled, devmenu will only display the free space you have less which will be >128 gb so it won't crash. Ya feel me? I did the same thing.
Mine had over 50 gigs full... and about 66 free space displayed after i transferred everything and DevMenu worked... Happy as can be..