Hello
3 R9 290 Sapphire
collisions/min: 8486.8750 Shares total: 110
Share found! (Blockheight: 53586)
-a 1 -t 0.0,1,1,2,2
Good
With the latest version? No. I get more with 3x 280X. People in this thread have reported speeds of close to 4000 CPM for each card.
Read the last 10 pages and try the various settings and configurations they've posted. Also, in your commandline there is a . instead of , between 0 and 0. By the looks of it, most 290 users get better performance with -a 0 or -a 2.
Try this instead: -t 0,0,1,1,2,2 (try with AND without -a 1, -a 2 and -a 3)