While the Radeon R9 290 open-source performance started out good with the basic OpenArena/Tesseract low-end games, with the more demanding OpenGL workloads is where this Hawaii GPU simply crapped out and was running worse than even a Radeon HD 5770. There are likely issues with re-clocking or some other area causing this R9 290 series graphics card to perform with rubbish speeds. I'll continue running more benchmarks with the latest Git code and see what comes about, along with the feedback from the forums. For what it's worth, tomorrow I'll have the Radeon R9 290 open vs. closed-source driver numbers for the Radeon R9 290 with the latest drivers.