I've tried a little the new r.5 and it seems promising: I like it!

After the first try, I've found something I don't understand: I have a dual camera setup with a David camera working at 25 fps and an TheImagingSource usb3 working at 60 fps.
By default David 5 read both, but the 60 fps one works at 15 fps (its exposure value moved automatically to 1/15). If I try to set it at 60, the camera stop to work after few seconds. Both cameras have their onw latest drivers installed.
Is taht an issue or a feautre needed to works correctly with these cameras togheter? In the online manual it is wrote that could be related to USB connection bandwidth... so setting a fps limit could solve? I ask that because I still don't understand why the faster camera is moved to 15 fps instead 30 or 25, like the other camera. And why David set it like that every time I run the software?
Thanks,
Mattia
p.s.: the new SL patterns have alterned bigger lines, right? at the first try, I thought my projector has a wrong resolution ratio, because similar effect happened time ago, when the resolution of the projector was wrong and some lines were "fused" together
