Lightroom CC Image Quality Reduced on Export

[R.ValentinePhotography]

I've been using Lightroom CC for over a year now with little issues. However, recently when I export an image after editing the image quality is greatly reduced. It almost looks as if the sharpness slider was moved all the way to the right and the color edits are changed. Is anyone else having this issue? 

Also, when I open the image in LR on my Samsung tablet or Note 9 (both have 4k displays and are optimized for maximum resolution) the image looks very different than it does on my monitors, the main monitor is a 4k res. This issue just started this week, previously I haven't had any resolution changes when going fom one device to another or when exporting an image. I'm a subscriber on mobile only and currently am using a trial to try it on PC. I liked it and was considering subscribing to the LR/PS on mobile and PC serivce but if this issue isn't resolved I will happily go to a different editing program.