I have been struggling with the same issue, and i would hope to not have to remove CCleaner (pro).
version 5.12.5431 (64bit)
I7-4790 cpu @3.6 Ghz, 32GB RAM, AMD Radeon R9 200 series
when i monitor the memory usage it creeps to about 20GB then i get the message.
Either the machine will reboot or i have to kill it (10 second Power press)
I have not unclicked the Edge and IE under WINDOWS tab,
Suggestions ?