Latest update for lightroom mobile is terrible.

Lightroom mobile now, at random, locks out the ability to use mask feature and all I'm able to do is exit mask and re-enter to keep making adjustments.  Additionally, I do a lot of fine line mask addition and removal and as soon as I begin to edit the whole picture becomes so pixelated that I can no longer make adjustments with any degree of confidence.  It has always been bad, but manageable, but now it's near unusable. Image attached for reference. Taken with Canon mk 3 in raw. One other thing, when making adjustments to mask it will randomly zoom in rather than edit the image.