Nope, for me it's running fine and everything works nice & fast.

Fedora28, Wine, Zorro1.96, R-Bridge to Win-32bit R3.5.2

But i use /i386/Rterm.exe, you also have to edit the RTermPath in Zorro(Fix).ini.

As i remember (can be wrong) the 64bit Rterm.exe only works with MT5, maybe that was your problem?