I'd like to wait for v4.3.1 before official release new gc and vrq code, but it looks like a test patch would be welcome before that.
Here it comes, please download the vrq_v4.3_0465_2.patch from bitbucket download page and it contains the bfs 0465 rebase and part3 of task caching commit in it. Feel free to git it a try and report back.
PS, I got feedback from a user who report vrq with wine gaming has better experience like mouse movement etc. It turns out the initial idea of vrq about reducing grq lock sessions helps.