Question: scrolling down runs out of posts Twitter
When Im on twitter or Facebook just checking todays posts etc.
As I scroll down I get so far then it runs out and just goes blank. And I cannot scroll any longer or back up and just get the spinning ball of doom.
Even if I refresh the page by highlighting the url as I can't with the spinning beachball, sometimes it refreshes ok but I can still only get so far down or Sometimes it refreshes but stays the same with the beach ball again and the only way I can get back in is to re-click my shortcut in my favourites so it completely comes out of the twitter/facebook site and then loads a fresh one but again can only get so far.
It is also happening on some sites i:e Jyf tv when I try to do a search for a movie, some times it works fine sometimes it doesn't and again the beachball, and again I have to completely come out.
I have tried clearing my history and cache and also deleting the com.apple.safari.plist file and restarting.
I have already re-set safari which it was still doing it before I did this.
And I have tried repairing permissions.
I have checked any extensions and I have done a run with malwarebytes.
I am running a mid 2009 (pretty old now) macbook pro
Thanks for any replies
MacBook Pro, OS X Yosemite (10.10.5)