Well, no intensity change, i give up. 
@valaki
What tasks are you having difficulty with when intensity is not adjustable?
Example windows drags, slowly opening programs and microlags, stuttering, unusable movie seeing. I did not experience with the old program (0.3.4b)
valaki,
Give ZhashOS a try. I just did a test watching a youtube video on my pc while mining at the same time. It worked without any stuttering on my browser that already had 150+ tabs open and get this.....Only 4GB ram and no (0GB) virtual memory is "ever" required. If you require it, I will figure out a way to post a picture proving it. Sol rate did slow down about 10% or so while watching the video but no stuttering. It is a pendrive O/S and you can keep your windows intact.
https://bitcointalk.org/index.php?topic=4481713.msg40261859#msg40261859