Playing against bots with an AMD r9 m265x (cape verde) using DRI_PRIME=1
rendered via Intel HD Graphics 4600 the game it's not playable for about 30+
seconds, bot cars start to one every 5~10 seconds. When playing online I get
the hangs for about the same time.

I made a trace of an offline match with the git version of apitrace, and I can
replay it with both git and stable version. You can find it at

https://drive.google.com/open?id=0B41ZZ4daaP9hTmNDaUl2MHFWQlE