I been looking on a side note to find a way to dedicate a cpu core to my 2 gpus and have boinc only use 3 cpus of the 4 for cpu tasks.

It's usually better to start a new thread for new questions. Otherwise they may get lost in the noise.

Since you run multi-threaded tasks you'd need to set the client to use 75% of CPUs in computing preferences. If the GPU tasks use in total more than one CPU you can limit their apparent CPU usage with app_config.xml .

<app_config>
<app>
<name>acemdshort</name>
<gpu_versions>
<gpu_usage>1.0</gpu_usage>
<cpu_usage>0.5</cpu_usage>
</gpu_versions>
</app>
</app_config>

sudo dpkg --add-architecture armhf
sudo apt-get update
sudo apt-get install libc6:armhf libstdc++6:armhf

<cc_config>
    <options>
        <alt_platform>arm-unknown-linux-gnueabihf</alt_platform>
    </options>
</cc_config>

<exclude_gpu>
   <url>project_URL</url>
   [<device_num>N</device_num>]
   [<type>NVIDIA|ATI|intel_gpu</type>]
   [<app>appname</app>]
</exclude_gpu>

There is also one case when BOINC fails miserably - it is not able to predict when PC will be switched off for longer time because owner goes to vacation/holidays/etc. Especially in this case such new button would be helpful to tell BOINC which tasks should be crunched now, because otherwise deadlines may be missed.

You already have an old button for that, it's called No New Tasks.

And even if you do not set that, there is still nothing lost, because BOINC works with redundancy: if you do not return a valid result within the time limit, it will be sent to someone else who will be able to do so. There is no project under BOINC that sends its tasks only to you, and never again to anyone else if you do not return a valid result. The science isn't irreparably lost when you do not return a result.

The only thing that will happen in this case is that you do not get credit, and that your BOINC will not ask for as many tasks when you return from vacation as it used to do. But allow it to do everything without managing things yourself and within no time it'll be back to values it did before the vacation.