xnor: I have a T510 and 7260 running the win7 drivers that I d/l from the Sager website (thank you!). It has been up and stable for about two weeks now. My router is an ASUS RT-AC66R (ASUS/Merlin firmware, build 3.0.0.4.354.29).
The 7260 properties (device driver) are set:
Prefered Band 5.2Ghz
Wireless Mode 802.11a/g (i.e. no b)
all others are default.
BIOS is de-whitelisted 6MET91WW (1.51).
I have not noticed any obvious connection problems. The speed shown in the Properties for the wireless connection varies between 200 to about 500 mb/s. This does not surprise me, I am 15- 20 feet away through 3 walls, some cabinets and a hvac duct or two--in other words, lots of interference. A large file transfer to my NAS averaged somewhere between 40-50 mB/s.
My laptop is the only 5Ghz connection to the router and none of my neighbors have 5Ghz routers--yet. My wife uses 2.4Ghz wireless-n; sometimes when she is on it seems that the latency is higher, but that may be due to internet connection sharing.
I've never pinged the router, so I just did: surprisingly, the latency ranged from 8ms to 500+ms! Typically, of four pings two were 5-10 ms or under and the other two were much higher and all over the place. No packet loss at all. If I let it ping continuously (217 packets), the latency was min1ms, max 891ms average 82ms. A quick perusal looked like 1/2 were 10ms and under and the other 1/2 were in the 100-200ms range. The router firmware has its issues which are well documented in other forums; I'll have to look this up when I get a chance.
RT-ac66R 2.4Ghz connection: 79 Packets, no losses, min 1ms, max 24ms (my wife is surfing at the same time), avg 2ms. Reconnected at 5Ghz: good latency (very low), no packet losses. Ping results are obviously affected by whatever else the router is doing...
Interestingly, the Bluetooth did not show up originally (see my previous posts above). What BIOS are you using and do you see the Bluetooth in the device manager (or bios, for that matter). Min 1ms, Max 257ms, Avg 5ms (i.e. most in the 1-10ms range with an occasional hiccup).
Edited to add 2.4Ghz data.