You have a small environment but moving from 15 to 70 users using published RDS apps means it's time to implement load balancing in you environment. Take a look at these articles.
Configuring RDSH Load Balancing on VMware Horizon
LINK: https://incloudnet.com/2016/02/20/rdsh-load-balancing/
Configuring Load Balancing for RDS Hosts
LINK: Documentation for VMware Horizon 7 version 7.0
Raul.
VMware VDI Administrator.
http://ITCloudStream.com/
Stay Connected: Like > Share > Comment > Reply > Helpful > Answered
www.ITSA.Cloud