Slow connection after 2nd latest upgrade with AUR 8192cu-dkms package

I have a wireless network connection with a "EDUP Ultra-Mini Nano USB 2.0 802.11n 150Mbps Wifi/WLAN Wireless Network Adapter", witch has the rtl8192cu chippset.
From the start I have hade problems with lag, droped packages and slow connection with the original rtl8192cu package. So after a while I installed the 8192cu-dkms package from AUR and it worked prefectly. Before I would just reach speed at between 5 to 60 KB/sec, but after I installed the package I would reach the maximum of ca 800 KB/sec.
After the next to last kernel upgrade (I think it was linux 3.17.3-1-ARCH or 3.16.???-ARCH) the speed droped back down to 15 to 100 KB/sec and it stared to lag. (And yes, I reinstalled 8192cu-dkms everytime I upgraded the kernel.) And the original drivers are still loosing more packages and have slower speed then 8192cu-dkms.
I have other computers on the same network and they allways reach ca 800 KB/sec and I have tried diffirent router settings and I am certain that the problem is with my drivers.
I use wifi-menu to connect to my network, since wpa_supplicant apperantly dosen't work with 8192cu-dkms.
I have tried reinstalling them with no improved results. And I am out of ideas.
Any one have the same problem or a solution?
Is it a good or bad idea to downgrade to the last kernel version were it worked?

This is basically my experience with every Realtek wireless chipset I have ever used on Linux. Honeslty, if you have the means, get something else. Realtek does a pretty shitty job writing and maintaining their Linux drivers.
Edit: See this thread for another user's awesome experience of a recent Realtek wireless chipset.
When I was struggling with a rtl8192ce a while back, I remember that there were a few module options that made it run slightly better. This was basically just to set it to use software encryption, and turn off any and all low power states.
Last edited by WonderWoofy (2014-12-13 23:58:09)

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