Whenever I click on "More System Details" there are several things I hope I won't see. Your Conduit Engine is one of them. It is malware by any reasonable definition and a cause of major problems with Firefox.

Google for information and advice as to how to get rid of it. Someone may come along with more specific advice..

If things aren't perfect after that you could do some straightforward troubleshooting(Safe Mode, Problematic Extensions, Hardware Acceleration etc) - in default theme -

https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

I wasn't even sure what conduit engine was, so I pulled up my addons. It's disabled. Are you saying that just deleting it doesn't get rid of it?

You have to completely clear it from your computer. Not knowing what it was and that you had it are definitions 1 and 2 0f malware.

I'm not sure how long it takes for problems to emerge but you could try running in Safe Mode for a while. Hold the Shift key down as you double click on the Firefox icon>ignore the page that opens>Continue. This will disable your extensions. If things work well, work through the troubleshooting link.

Did a search and found conflicting information. Some said they've been using Conduit Engine with no problems for years, then I found posts that say how to remove it, but not what the problems are. When I tried to find the files from the removal instructions, they weren't there, so apparently when I removed it from my add-ons, it removed it entirely.

So has your problem been resolved ??

No (and I'm adding more since this has to be more than 3 characters). ;-)

Basic Troubleshooting

https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting

Clear the Network Cache

https://support.mozilla.com/en-US/kb/How%20to%20clear%20the%20cache

Check and tell if its working.