Took the plunge and updated OTA to MR1 then again OTA to MR2. However Samsung Evo plus 256GB is still showing as doubled in size with problems managing storage. Good news is that the sound problems with Fortnite and Lineage 2 are resolved. Using a Sandisk A1 256GB card as adoptive storage and all works. Looks like Razer not going to fix the issues with Samsung Evo plus cards.