Too much work

Yes they do if your settings allow that. Rest of the Einstein tasks are GPU tasks (for your GeForce GTX 745) so they will run also quicker and parallel to the CPU tasks... if the settings allow that. Using 100% of the 'processors' may not be the most productive setting. Leaving perhaps 1 CPU core free could be a good "full power" setting for your system (if there's enough RAM for the running tasks then). That one core would manage the system operations and sort of help it breathe under the load.

You really can't but using the resource share for the Projects can help somewhat, ie put Einstein at 35 and your other Project at 65, out of a toal of 100, and Boinc will try to manage the tasks according to that. BUT Boinc has some funky ways it does things and one of them is the sharing or it's resources between different Projects, often times Project A will be running non stop using every resource and theen all of a sudden Project B will jump in and do the same thing. Add in more Projects to the mix and it can be a total mess.

The easier answer is to run Einstein this week and then set it to no new tasks for Einstein and then when they run dry run another Project next week, or for 3 days or whatever. IF you set Project B to a zero resource share then just stopping Project A from getting tasks will result in Project B getting enough tasks to use all available resources but not fill a cache, it will keep getting new units as soon as you need one. And then when you want Project A to run again you just allow new tasks and Project B will stop getting new tasks.

Okay but if you run another project it may happen again...you don't list what other project you are running but those percentages are based on the daily rac so if the other project gives alot of credits and or Einstein gives just a few credits for the tasks you are running then things like what you are seeing are normal. Boinc could be trying to manage the difference between 100,000 credits per day at one project and 1,000 credits per day as an extreme example. People who run multiple projects rarely see all of them running at the same time at any one moment in time, Boinc just doesn't work like that very often. ie one cpu core running Einstein forever and 3 cpu cores running PrimeGrid forever. Boinc generally runs one project on all cpu cores and then switches to the other project or projects until the daily rac numbers slowly kinda sort come together using your settings over time. Time is the key here in that it can easily take 1, 2 or even 4 weeks or more if you are running a long running project like ClimatePrediction for example, to get the daily rac's at your specs between the different projects. In your case it's 99% daily rac for one project and 1% daily rac for your other project, it's NOT "utilization" as you put it.