Washing machine vibrations

[MidsTW]

I recently moved the washing machine to a different room. Floor in the house is all block and beam.
I’ve noticed on the last 2 runs that at the peak spin speed the vibration resonant through the floor in the house. Haven’t noticed this in the 8 years we have lived here…

Could it be the direction of the beams?

The washer is sitting slightly off left to right but the washer isn’t bouncing like you’d normally see when the feet aren’t right.
I’ll level it up but just feels different.

Are the anti vibration mats any good?

 

[blup]

It’s the house as much as the machine, get it absolutely level and try spreading the weight by fitting it on a piece of ply or similar.

 

[MidsTW]

I don’t think the washer is vibrating any more than it was in the kitchen. It’s just that it is now presumably on a beam which just happens to resonant more so with the frequency of the washer. I don’t really have much room to move the washer.. I could maybe try moving it 150-300mm to see if it sits better.
Is the board likely to help for this? Would 12 ply be okay? Straight onto LVT?