My View Layouts were reset after I upgraded from 1.85.490 to 2.0.2146.0. I had the exact same problem when I upgraded to 1.85.
Custom Views reset after 1.85 Update
I deleted the SolarWinds file in the MMC directory, restarted PM, and noticed that all the windows were a lot faster. I am thinking I may have had a corrupt MMC file. Hard to say, so I thought I would just put my experience out there.
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