cursor turns into Hourglass with every move of thw cursor

Recently In Word, when i move the cursor -with the arrows keys - in a
document, it has a delay and it turns into hourglass with every press of an
arrow key. It seems to delay also with a double clik - in order top select a
word.
I uncheck grammar check from the tools and any other option that might cause
this, but nothing happen. Also i uninstall every programme that i recently
install - because a couple of months ago "word" worked without this problem.
Any suggestions
Many thanks