i dont know if some one else has the same thing as i have experienced just right now.
after clicking done on the desktop settings , screen blinks for a sec .

things i have modified after it started blink.
1 - swappolube(proposed)
2 - installed tracker cfg and checked lowmemorymode and throttle at 10.

changed the transition to D4rK CSSU Transitions - Blur but again changed it to dscobsct .

now things i wanted to ask .
is it normal and does any one experience the same ??
if it is not then what could be the problem ?