I play a game on facebook and now since the recent update I can only play 2 or 3 games before I have to clear cache and cookies and close the browser and open a new one. After 2 or 3 games of playing 8 ball pool either on facebook or miniclip.com the game gets bogged down, slow and jerky motions. Firefox has made some change with the cache and it is not clearing or not doing something right. Please fix this as I've been playing this game for years. It usually takes about 25 games or so before cache has to be cleared. Now the game is unplayable since firefox version 63 came out. I can only play a couple of games before it starts slowing down and getting jerky. I uninstalled and reinstalled my adobe flash (in case that were the problem)and have deleted browsing data and settings on adobe flash. I have and have had the lastest version. It was not the problem. In Firefox I Clear DATA and clear under Manage Data and it will show zero.. so I am clearing, then closing, then opening firefox then clear data and clear manage data before playing a game or even surfing the net. I am assuming the problem is cache. because the game slows and gets jerky just like when the cache is full. Thanks.