Please see screenshot:
https://photos.app.goo.gl/zMN47GVYLv5yEZ637

Fri Aug 9 16:34:40 2019 | | cc_config.xml not found - using defaults
Fri Aug 9 16:34:40 2019 | | Starting BOINC client version 7.14.2 for x86_64-apple-darwin
Fri Aug 9 16:34:40 2019 | | log flags: file_xfer, sched_ops, task
Fri Aug 9 16:34:40 2019 | | Libraries: libcurl/7.58.0 OpenSSL/1.1.0g zlib/1.2.11 c-ares/1.13.0
Fri Aug 9 16:34:40 2019 | | Data directory: /Library/Application Support/BOINC Data
Fri Aug 9 16:34:40 2019 | | OpenCL: AMD/ATI GPU 0: AMD Radeon Pro 560 Compute Engine (driver version 1.2 (Jul 2 2019 21:41:38), device version OpenCL 1.2, 4096MB, 4096MB available, 384 GFLOPS peak)
Fri Aug 9 16:34:40 2019 | | OpenCL: Intel GPU 0: Intel(R) HD Graphics 630 (driver version 1.2(Jul 2 2019 21:50:31), device version OpenCL 1.2, 1536MB, 1536MB available, 211 GFLOPS peak)
Fri Aug 9 16:34:40 2019 | | OpenCL CPU: Intel(R) Core(TM) i7-7920HQ CPU @ 3.10GHz (OpenCL driver vendor: Apple, driver version 1.1, device version OpenCL 1.2)
Fri Aug 9 16:34:41 2019 | | Host name: MacBook-Pro.local
Fri Aug 9 16:34:41 2019 | | Processor: 8 GenuineIntel Intel(R) Core(TM) i7-7920HQ CPU @ 3.10GHz [x86 Family 6 Model 158 Stepping 9]
Fri Aug 9 16:34:41 2019 | | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clfsh ds acpi mmx fxsr sse sse2 ss htt tm pbe pni pclmulqdq dtes64 mon dscpl vmx smx est tm2 ssse3 fma cx16 tpr pdcm sse4_1 sse4_2 x2apic movbe popcnt aes pcid xsave osxsave seglim64 tsctmr avx rdrand f16c
Fri Aug 9 16:34:41 2019 | | OS: Mac OS X 10.14.6 (Darwin 18.7.0)
Fri Aug 9 16:34:41 2019 | | Memory: 16.00 GB physical, 53.86 GB virtual
Fri Aug 9 16:34:41 2019 | | Disk: 931.55 GB total, 52.15 GB free
Fri Aug 9 16:34:41 2019 | | Local time is UTC -7 hours
Fri Aug 9 16:34:41 2019 | Citizen Science Grid | URL https://csgrid.org/csg/; Computer ID not assigned yet; resource share 100
Fri Aug 9 16:34:41 2019 | Milkyway@Home | URL http://milkyway.cs.rpi.edu/milkyway/; Computer ID 811457; resource share 100
Fri Aug 9 16:34:41 2019 | PrimeGrid | URL http://www.primegrid.com/; Computer ID 971492; resource share 100
Fri Aug 9 16:34:41 2019 | SETI@home | URL http://setiathome.berkeley.edu/; Computer ID 8787698; resource share 100
Fri Aug 9 16:34:41 2019 | World Community Grid | URL http://www.worldcommunitygrid.org/; Computer ID 5761973; resource share 100
Fri Aug 9 16:34:41 2019 | | General prefs: from https://scienceunited.org/ (last modified 07-Aug-2019 23:54:49)
Fri Aug 9 16:34:41 2019 | | Host location: none
Fri Aug 9 16:34:41 2019 | | General prefs: using your defaults
Fri Aug 9 16:34:41 2019 | | Reading preferences override file
Fri Aug 9 16:34:41 2019 | | Preferences:
Fri Aug 9 16:34:41 2019 | | max memory usage when active: 11468.80 MB
Fri Aug 9 16:34:41 2019 | | max memory usage when idle: 14745.60 MB
Fri Aug 9 16:34:41 2019 | | max disk usage: 51.32 GB
Fri Aug 9 16:34:41 2019 | | don't compute while active
Fri Aug 9 16:34:41 2019 | | don't use GPU while active
Fri Aug 9 16:34:41 2019 | | suspend work if non-BOINC CPU load exceeds 25%
Fri Aug 9 16:34:41 2019 | | (to change preferences, visit a project web site or select Preferences in the Manager)
Fri Aug 9 16:34:41 2019 | | Setting up project and slot directories
Fri Aug 9 16:34:41 2019 | | Checking active tasks
Fri Aug 9 16:34:41 2019 | | Using account manager Science United
Fri Aug 9 16:34:41 2019 | | Account manager login: dgas
Fri Aug 9 16:34:41 2019 | | Setting up GUI RPC socket
Fri Aug 9 16:34:41 2019 | | Checking presence of 140 project files
Fri Aug 9 16:34:41 2019 | | Suspending GPU computation - computer is in use
Fri Aug 9 16:34:41 2019 | | Suspending network activity - computer is in use

Find the Activity menu and check that CPU is also set to "Run based on preferences". For when it's set to Run always it will ignore those preferences.

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