With a new Lenovo E540 with this Wireless Card! I've the same issues
Driver version is the last one from Intel, 17.0.5.8 with Windows 8.1 used as OS. Same issues. Connection is continously dropping but the strange thing is that it seems to happen only with my home router. A new DLink DSL 2750B. I've other 5 wireless devicess used in my home, laptops and smartphones with no issue at all. At office the wireless instead has no issues: there we use an old wifi router with no DSL connection (the router link wifi to a cabled LAN).
I'm not sure that the same reported issues have been solved. Not enough testing. But I don't understand what to apply. All of below suggestions or just the last two?
Applying only 1 withe 17.0.5.8 did not solved
- Disable uAPSD under Adapter properties > Advanced, which seemed to fix my inability to join certain wireless networks
- Changed the channel width (for the 2.4GHz) to 20MHz only
- Enabled QoS Ad-hoc
MODIFIED AFTER 40 MINS TESTING
Those corrections did not solve. Dropping happens, less frequently but happens.
Now I'm using and external USB wifi key from DLink with no issues at all!!!