VPN Router for site to site - warehouse to main office

It seems that the VPN routers and setup are fine.  Speaking with tech support for the business software used by this company, the only way to speed this up is with a Citrix or MS Remote Desktop solution.   The software database is a super fat client and never meant for a WAN (they suggested a T3 (D3?)).   And all this for one desktop and very important printer to run the warehouse effectively.

So we are getting remote desktop licenses for a server to use with this software.

However in the back of my mine this still doesn't sit well.   I think there is still something up with the VPN created by the Cisco routers or the cable provisioning.  However, on the other hand, we can copy files from shared folders from the main office to the warehouse computer with excellent speed.

I get to add two 400Gb SSD's to the server for this app.   That will be speed.

Thanks for all the advice and direction.   Excellent forum!