That's greatEnochLight wrote:
You might be happy to know that there will be no paid updates for 2018, as officially stated by their Product Manager:
https://www.propellerheads.se/blog/reason-101-is-hereI would also like to take this opportunity to inform you that based on your feedback, we have decided there will not be any paid upgrades to Reason this year. So there’s absolutely no need to worry about missing out on new features later this year if you’re thinking about upgrading to Reason 10 now.
Personally I don't have any VST related problem in Reason, but it is great to know that Propellerhead's managers/developers are spending their efforts in enhancing the performance