Comment 333 for bug 252094

> I hope, this report helps somehow.

I'm sorry, but this information in this place won't help. If you file
a new bug report, attach Xorg.0.log, the output of `lspci -vvnn` and
the information above, it may help. If you use the ubuntu-bug program,
it will attach a lot of useful information to the bug report. Be sure
to check https://wiki.ubuntu.com/X/Troubleshooting/IntelPerformance
and tell if any of those problems can explain your peformance issues
(I know this is what you did, but this is the wrong place).

In this bug report there are lots of different unrelated performance
issues, most without sufficient information, and it is just way to
messy to start analyzing anything here.