I created this reddit post. This will get Wolf ET running on your mac with no noticeable lag, no virtual machine and no bootcamp
https://www.reddit.com/r/EnemyTerritory/comments/47zs3s/how_to_run_et_on_mac_el_capitan/
Hey guys my name is Brian and I just got back into playing Wolf: ET since its the only shooter my macbook pro runs well.
You might have seen me on the recruiting or jammed #2 server.
I am from Southern California and play a few hours every day.
I am glad to see that the wolf et community is still alive haha!