Lightroom Freezing on Masking function since 2 days and then its interface is fading completely.


This computer have 12 GB RAM, 2 GB Nvidia 710 and i3- 3.60 G Hz, runs on SSD and really Good internet.
i've been using lightroom on it since a month, i never faced such issue, yet it was a bit slow, used to stuck for a second but now its freezing completely even on low sized JPGs . - rest of softwares are working fine.
please help
i cleared its cache memory within the app
cleared computer cache - disk cleanup
checked for updates - already up to date
please....
