If you have some images that were converted in High Speed mode from the previous version check them against the new version. What I'm seeing is that the new version High Speed mode is a little softer then the old version High Speed mode:
you know what... you are correct...
i took a sample image, converted with the old DPP in both HS and HQ mode (NR 0/1 applied, i forgot to change it, but it doesn't matter anyway), then upgrade to DPP .26, and did the same, and this time converted the HQ crop with NR turned completely OFF. and i browse these 100% crop in ACDSee Pro 5 connected to a 55' HDTV, so each pixel is larger, and easier to spot the differences, and indeed i found the following:
1. the old HS picture is the sharpest, but a lots of false color (red)
2. the new HS picture is slightly softer
3. the new HQ picture is also slightly softer, about the same as the new HS one, but much less false color
4. the old HQ... is ... rubbish...
it's there, however, unless i put them into layers, i can hardly tell... and i prefer Lr 4.1 RC over DPP anyway, a lot more noise, but quite a bit more details too.
all 4 images attached.