For some reason on both of my windows 10 computers, I have tasks that will stop progressing while adding time to both time elapsed and time remaining. It will turn what should be a 30 minute task into a 14 hour task if I don't check on it. If I suspend the task and then resume it then it will go back to working normally.
I tried to set the preference to switch tasks every 30minutes to avoid this but it will not change tasks automatically.
Any ideas?

Have you also set BOINC to: Run based on preferences?

And the switching is only "OK, You're now allowed to switch if you want to", NOT "You must switch now".
Then it's up to the app when it actually does switch.

Three possibilities come to mind:

The machines are overtaxed; there are too many BOINC jobs running, or too many background tasks running or some combination of both. Reduce the number of jobs until you find the limit.

Jobs are using up all available RAM and hitting the swap, slowing things way down. If the machines aren't locked up and are fairly responsive to user input you can probably rule this out.

The project app is buggy. It might be stuck and falsely reporting progress, check your CPU load to see if it's what you expect. If the tasks are hanging as you describe and everything else is working properly, that needs to reported to the project. Check the project forum to see if others are reporting this problem. It's also possible that this is a new app and BOINC's time estimate is way off. The solution in that case is to let it run and the time estimate should correct itself eventually.

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To add to what Nick said, sometimes tasks can go into a loop and get stuck. It hasn't happened to me for a long time with CPDN and the task type that I had this happen on isn't used any more. It would be worth posting the project and task type if they have more than one. Also check in task manager to see what the %cpu usage is. You can find out how much RAM and disk space is being used by highlighting the task in manager and clicking on 'properties.'