Miner does not set optimal "-h" and "-a" options for many cards. It's because I don't have all cards here. Post first 20-30 log lines here so I can see how many compute units your card has and what's its name. Use "m" key to adjust "-h" value, or try to change "-h" values directly if OpenCL crashes.
This version requires some time to find optimal settings.
Everyone can post optimal "-h" and "-a" values for your cards here (and also card name as it is displayed and number of compute units), I will use this data to improve miner. Right now it knows only 290x,280x,270x and 6950 cards.

20:12:01:806   de8   
Cards available: 1
20:12:01:806   de8   GPU #0: name: Bonaire, 1024 MB available, 14 units
20:12:01:806   de8   Total cards: 1
20:12:01:806   de8   Initializing...

20:12:01:822   de8   card 0, m1 1024, m2 767 w 112
20:12:01:822   de8   0 m = 2
20:12:01:822   de8   GPU #0: HashCnt = 448
20:12:01:822   de8   POOL version
20:12:01:822   de8   b120
20:12:02:570   de8   GPU #0: -a 3 mode selected
20:12:02:570   de8   LOW INTENSITY MODE ENABLED
20:12:02:586   de8   5 pools specified.
20:12:02:586   de8   Press "m" key for tune mode.
20:12:02:602   11c8   Stratum - connecting to 'xmr.hashinvest.net' <62.210.84.160> port 1111
20:12:02:617   700   Stratum - connecting to 'xmr.hashinvest.net' <62.210.84.160> port 1111
20:12:02:992   11c8   Stratum - Connected
20:12:03:023   700   Stratum - Connected
20:12:03:444   11c8   got 303 bytes
20:12:03:444   11c8   buf: {"id":1,"jsonrpc":"2.0","error":null,"result":{"id":"477921936335042","job":{"blob":"0100f6c0a6a105c91bdeb4d89210f6081785a8317da308976f0250a485a4959414204e36b6ded20 0000000c439f38aaaa84f27d1803c04749df790b18fc5dc67e18bed5b84c73df04d92be01","job_id":"773878962569870","target":"169f0200"},"status":"OK"}}

20:12:03:444   11c8   parse packet: 303
20:12:03:444   11c8   new buf size: 0
20:12:03:444   11c8   DevFee: Pool Diff 25000.1
20:12:03:569   10e0   Round
20:12:07:126   a98   GPU 0: HashCnt = 448, time = 3479 ms, hashrate = 128 h/s
20:12:07:126   a98   Round
20:12:10:589   10e0   GPU 0: HashCnt = 448, time = 3399 ms, hashrate = 131 h/s
20:12:10:604   10e0   Round
20:12:14:021   a98   GPU 0: HashCnt = 448, time = 3353 ms, hashrate = 133 h/s
20:12:14:036   a98   Round
20:12:17:484   10e0   GPU 0: HashCnt = 448, time = 3376 ms, hashrate = 132 h/s
20:12:17:484   10e0   Round
20:12:20:947   a98   GPU 0: HashCnt = 448, time = 3387 ms, hashrate = 132 h/s
20:12:20:947   a98   Round
20:12:24:488   10e0   GPU 0: HashCnt = 448, time = 3461 ms, hashrate = 129 h/s