Frankly, the reason I didn't (or more precisely, "couldn't") respond to your specific question was because I seldom use Casper's scheduling capability. It's really just a personal choice on my part. The relatively few times I've employed that capability it seemed to work just fine. But it's just that I'm more comfortable in utilizing Casper's disk-cloning capability on an as-needed basis.
I've been using Casper for probably about 10 years or so now. By & large I've never found another disk-cloning program its equal in terms of its overall effectiveness, simplicity of use, and most of all - speed of operation.
Our chief - virtually exclusive - use of the program is to maintain frequent comprehensive backups of our systems. Our experience has been when the program is thus utilized in that fashion, its speed in creating the clone is far superior to any other program I've experienced.
I would agree with you about the negative comment you had concerning Casper 10's new interface as compared with the Casper 8 version. I was a beta tester for Casper 10 and that was my chief complaint. But strangely - in comparison with your comment that the new interface is "too-simplistic" - my negative comment was just the opposite of yours! I preferred the no-nonsense relatively simple user interface of Casper 8. But the new interface (in my opinion) isn't a "deal-breaker" by any means. The program is still simple for a new user to understand and employ.
My experience with Casper 10's speed of operation appears to differ from your experience. I find its disk-cloning speed even slightly faster than the predecessor version, although the difference isn't terribly great based on my experience. Again, I'm referring to situations where the program is employed on a relatively frequent, routine basis for comprehensive backup purposes.
Anyway...do get in touch with Casper's tech support re your issue. As I mentioned, I've found them to be quite responsive & supportive to requests for assistance. Don't be concerned about "wasting someone's time". Assuming you do get in touch with them I would also include your comments re your experience with Casper 10 concerning the program's lack of operational speed as compared with the previous version and your negative comment re Casper 10's interface/design as compared with the previous version. Casper support is sensitive to user's comments re their program.