Ok, with cgminer-4.9.2, my AU3 (
https://www.amazon.com/gp/product/B016CWBYJK/) gets 12.5Gh/s over several days. With cgminer-4.10.0, it gets 8.5Gh/s over several days. The older USB miners all get the same on both versions. Both versions have all generic USB drivers enabled. I get the same results on both my 256M arm controller and an x86_64 desktop running Fedora 25. On the arm controller, both versions crash with "echo -n summary | nc 127.0.0.1 4028". I'm also getting a lot more accepted hashes with 4.9.2 - several times more, which the modest increase in total hashing power doesn't explain.
Conclusion: There may be a (subtle and hard to debug) problem with 4.10.0. :-(
Subtle or otherwise, if you do a git bisect to find the point of slowdown between 4.9.2 and 4.10.0 you should be able to find it what commit is responsible.
If you're getting a crash on any platform, if you build a debug version (with CFLAGS -g only) and then run it in gdb you should be able to get a backtrace to find the crash debug. But if you're out of ram/resources, there's not much I can suggest.
Also please don't post 3 consecutive posts for the same issue. Edit your last post or create a new post, deleting your old one.