@Marco_de_Jonge yes I checked, see my report:
"I confirm that the convolution filters are now properly resampled and are linear phase, which allows to keep all the “dynamics” of the signal as well as soundstage accuracy.
Blue is with Roon 1.5, Red with 1.6. The Null IR is 384KHz, the Dirac test signal is at 96KHz.
Next chart: In comparison with HQPlayer, 48k Null IR and 44.1K signal. Both phases are linear and Roon is now as good as HQPlayer.
For your information the phase in this configuration looked like this before the fix (in green) 
"
