Hi, thank you for your post. The forums are not a very active place and manufacturers thus ourselves have a support knowledge base and contact form to reach the team for quicker response here -
https://help.nomadfactory.com.
The current plug-ins are varied extending 24-bit and upto 96k, with Rock Amp Legends fixed 48k. Collectively we shall be addressing and optimizing algorithms further with porting to a new framework (an ongoing process) and raising values perhaps also to include oversampling should that be a formative request from the community.
Thanks!