Playing as a "Slow Tape"

I have recorded a new composition using a Roland System-1 as a VST interface.
The roland interface works only @96KHz, but the project was set on 48KHz.
Now if I play the project from Cubase timeline with SYSTEM-1 it plays fine, but if I try to render as mp3 or I try to change the VST interface to “Generic low latency” or “ASIO4ALL”, it plays as a slow tape. It seems that it is not possible to recalculate the clock of the project.
Any suggestion to save my project?
I have triyed to save it as a midifile, and also to copy single tracks in a new project, bat everytime I have the same “slow tape” effect.

Thanks in advance,