The crash ID points to an older Firefox 52.0.1 report dated March 3. Please post a recent one - open about:crashes to see them. My personal solution would be to remove KIS 2017 as that is obviously the cause, but this is probably not what you would like to hear. My guess is that making sure KIS 2017 has all its updates or even updating to KIS 2018 would solve it. Fwiw: security software always slows down performance a bit.