With regards to 2, the deflicker filter was removed by popular demand:
[24/11/2017][CRT Emudriver 2.0][CRT Tools 2.0][beta 11]
- [Emudriver] Disabled deflicker filter for interlaced modes. Now your interlaced modes will look perfectly sharp, with all their genuine flicker intact.
If you like the deflicker filter, you can use a version of the driver previous to beta 11, and still use the updated CRT Tools.
With regards to 1, I'm afraid that must be some Windows 10 incompatibility. If you press "d", it'll show a debug console. Its contents my help diagnosing the issue.