That's not good. I tried the newest official with those settings and they didn't work.
Generally I gathered some information from this forum and worked out those settings. If you switch HT off may get stable connection but up to 54Mbit - not good. It seems like the card has issues on N standard and 2.4GHz band.
The swap would be my next step if I didn't manage to get it stable. But I have 19 of those laptops and I would go through manufacturer.