LXNAV V8 (S8/V80/S80) Issues?

Hi all,
I wonder if anybody in this forum using the V8, V80 or S8/S80 has experienced the same problems that I have and can help me with some advice.
Last year I bought a new LX9050 and ordered the V8, but due to production delays, I got to borrow a V5 vario.
I installed the LX9050 with the V5 and set it up to use Electronic compensation and everithing was fine. The Vario worked like a charm.
During the nationals, the V8 was finaly delivered and I was looking forward to flying with the new vario, expecting superb performance.
What I experienced however is a very "unsteady" vario behaviour. I tried setting the filters / damping at different settings from 0.5 to 2.5 seconds (I also played arround with the "Smart filter" option) and although the high damping produces a more steady sound and needle movement, it also seems very slow and still shows some unexplicable "peaks" or "valleys" that seem erroneous.
I've been really fighting to get this right with no luck so far.
I will really appreciate to hear from others experiencing this behaviour and especially if they have been able to "fix" the problem.
If you have a good working V8, V80, S8 or S80, I'll also be interested in your vario filter settings in order for me to try.

Thank you very much in advance.
Best regards
Felipe