I would let Stskeeps post this himself and gain all the credit and glory... but it's really too damn good to wait for.

07/17@22:56:20 <#nemomobile/Stskeepz> in other news, if you want to fix the @$@$@$ tearing on
n950/n9, edit /usr/share/meegotouch/targets/N950.conf to say
X=854 instead of X=856

Not only does this fix tearing in a bunch of applications (like the homescreen...), it also fixes really horrible compositor flicker a lot. Some applications still flicker, but that's fixable.

This feels sooooo much better! Should be on next release I guess, but it's not submitted so far.