Simshaker not recognizing for low fidelity planes

[Richard amo]

Hi there

Love the software by the way ,would be hard to fly without now for sure.

But I do have an issue,I just reverted to 2.7 from 2.8 in dcs as 2.8 vr for me was very poor in performance,anyway now all the low fidelity fc3 planes no longer work,I use the su27 quite a lot and it's not functioning with that.

The high fidelity planes are all good.

Any help would be much appreciated