Cursor and shimmering

[_JMax]

Searched the forum but I am unable to solve this.When my cursor is showing on-screen,I have  zero shimmering. As soon as the cursor automatically hides, I get massive shimmering and an increase in the overall brightness. .If I move the mouse to re-activate the cursor,all shimmering goes away--until the cursor disappears again. My work around has been to open the kneeboard and leave it open but simply drag it out of the way so that just a small part of it is visible....No shimmering and no changes in screen brightness. 

Edited January 27 by _JMax