I have logged on and opened only five tabs. I now have 13 Firefox instances. Firefox has gotten unusable. I've tried everything that Mozilla and others recommend. Don't bother to tell me to uncheck "Use recommended performance settings." Who hasn't don't that already. I also don't need to read that this is normal. I HATE Chrome but will have to switch to it if I cannot improve my very slow functionality. People need real solutions, not the same answer pasted into every complaint about this. Perhaps the answer is that you have no solution. I even tried to set the autostart option to "false" as some suggest to disable multi-processes. I think that's made it worse. I have fought this for several years but now, the situation is very much worse. I've been exiting Firefox and getting back in to stop so many processes (sure, sure, instances) but now I see 13 instances with only 5 tabs opened. Within 10 minutes, I have 13 processes running. Call them instances if you like, but they are 13 separate .exe files that are slowing me almost to a stop.