Hi,
I'm terribly sorry. This is a known problem and has been discussed in this forum already.
But at least I can now say, the update of the Substance plugin is really close to its release. And it will not only fix this problem, but also provide some new features and an increase in speed. So you have at least something to look forward to and the wait shouldn't be too long.
Again, sorry for the inconvenience, the update was actually planned in parallel to the R17 release, but we didn't quite make it...
