I can run the system at 4.0 with useplatformclock set to true, but when trying to apply the fix setting it to false, it becomes wildly unstable, screen flashing black, programs going bonkers etc. Luckily I was able to change it and reboot.
I did just try the fix at stock clock and it works. So I'm having the same issue as the other user on another thread. His OC was more modest than mine though.