Any help or suggestion appreciated

Not with Cubase you can't. Unless there is a low latency monitoring option that bypasses the plugins.

Studio One has a feature that allows for Low Latency Input monitoring even at high buffer settings. However, it disables any plugin that goes over 3 ms latency, otherwise, the feature wouldn't work. Quantum was designed to utilize this feature, hence why the internal round trip latency of the unit is lower than any TB product in it's class.

Now, personally, I would never have that much processing on while attempting to track audio. I do things in stages.

While tracking, I use low cpu / low latency plugins until I am finished with all recording. Save that session, then open another version of it for mixing. Only then, do I use heavier cpu use plugins.

If something needs to be re-tracked, then you bring it back to the tracking / recording session, do the business, then export the stem.