Computer lagging when mining after driver update

Hi there

I assume this is the forum to post in? The general support forum said not to post altcoin support questions, so I assume this is it.

Anyway...

I updated to the new mantle drivers (14.2 beta 1.3 to be specific) but have since then been experiencing insane lags when mining - even if just mining on the second GPU which isn't used for windows.

The lag is the kind of lag you get if you turn up your intensity to the top, the mouse will start acting slow and start lagging, moving from one point to another in 5 seconds instead of a split second.

I've tried doing a driver uninstall and tried the latest stable version as well as my old driver which it worked with (amd_catalyst_13.11_betav9.5), but without luck..

Any ideas?

My base mining setup:

Code:

cgminer.exe --scrypt -o stratum+tcp://us3.wemineltc.com:3334 -u Maldark.x -p x -T --gpu-reorder -I 14,20 -g 1 --thread-concurrency 32765 --gpu-powertune 20 --gpu-engine 947,947 --gpu-memclock 1250,1250

^ I used to be able to do this while just browsing the interwebs, watching streams etc.

My "2nd gpu mining alone" setup:

Code:

cgminer.exe --scrypt -o stratum+tcp://hot.wemineltc.com:3333 -u Maldark.x -p x -T --gpu-reorder -d 1 -I 20 -g 1 --thread-concurrency 32765 --gpu-powertune 50 --gpu-engine 947,1050 --gpu-memclock 1250,1500

^ I used to use this while running games etc

I cannot run either, even though the 2nd one only uses the 2nd card (hence the -d 1 (d for device))

Any ideas are greatly appreciated.

Thanks

EDIT: Also I'm maintaining roughly the same kh/s on the 2nd gpu, but going from what used to be 600-840(depending on the settings) to max 15 kh/s on my main / 1st gpu.

Solution: Installing the driver enabled crossfire per default...... surprise ...