https://bugs.freedesktop.org/show_bug.cgi?id=103384
Timothy Arceri t_arceri@yahoo.com.au changed:
What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |NOTOURBUG Status|NEW |RESOLVED
--- Comment #6 from Timothy Arceri t_arceri@yahoo.com.au --- (In reply to Max from comment #5)
i load Ubuntu via kernel: 4.4.0-31-generic - PERFECT PERFORMANCE!!!
4.4.0-31 vs 4.4.0-87-generic indicates that the change whatever it was is due to ubuntu specific patches. I'd suggest upgrading your Ubuntu version.