Mass will dampen vibrations, that is for sure. When I had mine, it was bolted down to a wooden bench. See photo. There was a lot of steel etc in the drawers under the machine!
Yes the power crossfeed is a little quick and it can be tamed by using a larger gear than the 64s that were included. The older lathes had 96s but not the 16/32 stud gear behind the spindle. Order a similar gear or 3D printed one to reduce the feed rate. I believe that the slowest feed was 0.0017”, but don’t quote me on that!
Pierre
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