Screen tearing using GUS music in Tyrian 2000

[tonytoon]

When using GUS music mode in Tyrian 2000 (which requires loading Ultramid) I encounter screen tearing that is not present in any other playback mode. Can anyone verify if this occurs on a real GUS?

486DX4/100 16MB RAM, using SB16 for digital audio. CLGD5428 integrated 1MB video. MS-DOS 6.22 as well as PC-DOS 2000. PicoGUS on latest (as of today) firmware.

The game is still perfectly playable.