Today, 11/12/2015, I had to re-download the client and it's maps and stuff for some reason even though I had it already downloaded a few days ago.  Many others had their clients downloaded again also assuming it was some big update.  Now for some reason each time I click on tools > game settings I lag a lot and the client stops responding.  I would have to close it and open a new client to play again.  Although when my client was re-downloading, I was able to use this settings and change VBO mode and stuff, but now I can't.