Comment 14 for bug 1297286

Ok, so as I said in my previous comment, I have tested the performance of wifi in Ubuntu 14.04 in 3-4 laptops in last 1 week.

After fresh installation, wifi keeps on dropping. Then I applied tlue's workaround on all of them which was:
echo "options rtl8723be fwlps=N ips=N" | sudo tee /etc/modprobe.d/rtl8723be.conf

Now after doing this, the wifi stabilizes but after long usage (2-4 hours continuously) it drops for 5-20 seconds and then either comes back automatically or needs a reconnect (Reboot is not required to reconnect in this case).

So after digging about incompatibility related to msi in rtl8723be, I added one extra parameter in above command:
echo "options rtl8723be fwlps=N ips=N msi=1" | sudo tee /etc/modprobe.d/rtl8723be.conf

After using for 4-5 hours I didn't see a drop. Still I am keeping fingers crossed.