On the Android version I'm encountering graphical errors upon starting, running Android 6.0 with an octa core processor and 4gb ram my phone is OPPO and with colourOS V3.0.0i if that is useful information
I'll try that then get back to you with the results at least if we can conclude that it is my device then at least in future it'll be known of possible issues with OPPO phones, if it's not just my phone on it's own it is second hand after all