problems with UAD thunderbolt

[benabes]

Y have an UAD apollo 8 thunderbold on PC. and the V collection updated 7.1
On some softsynths I have no sound when I connect it as an ASIO device
(for example piano buchla Mellotron).
On some others It works correctly

[dede64]

I have the same problem, change the Sound Output to another one and then switch it back to your prefer Output. Then your Instrument will sound correct.