"Movements" tool crashes C1

Hi everyone on the forum,

Lately, I have a strange problem in C1 (10.0.1) on a Macbook running macOS 10.12.2: I am using the Samyang 24mm f3.5 Tilt-Shift lens on my Sony Alpha 7.
In order to correct for the pronounced barrel distortion this lens produces when shifted, I enter the proper shift distance in the Lens Correction tool's "Movement" tab and then add around 20% distortion in the "Lens" tab of the same tool. This corrects the distortion perfectly, great job C1!

Unfortunately, as soon as I do this, the histogram, levels, and curve tools do not show graphics anymore. The color picker also doesn't show values above the preview. Also, if I click into the image with the color picker tool, C1 processor load goes up to 400% and the software becomes very unresponsive. As soon as I set the "Movements" tab values all back to zero, everything is fine and working properly again.

P1 support only suggested to work without histograms etc, which is not a viable option of course.

I also tried disabling OpenCL, to no avail.

I also tried using the "Movements" tab with other RAW files (Leaf Credo .IIQ, Olympus .ORW), with the same bad results. So, it seems to be a general problem with the Lens Correction tool and not specific to Sony .ARW files.

How can I use the "movements" tab properly?

It would be great to get input from you on that matter,

best,

geb