[LAU] Qtractor MIDI queue timer and TSC

Hi, by View > Options... > MIDI tab I can chose between 'default', 'system timer' (for my current installed rt kernels 300Hz), 'HR timer' and diverse 'PCM' timers. My old computer doesn't have 'TSC', so Qtractor's queue timer still is set to use 'HR timer', to reduce MIDI jitter. If I want to chose 'TSC', when running Qtractor on my new machine, should there be an entry 'TSC' or since it's the current clocksource, would selecting 'default' be the option to use 'TSC'? IOW what is 'default' for and why is there no option to select 'TSC'? [rocketmouse@archlinux ~]$ cat /sys/devices/system/clocksource/*/available_clocksource tsc hpet acpi_pm [rocketmouse@archlinux ~]$ cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc [rocketmouse@archlinux ~]$ qtractor -v qt5ct: using qt5ct plugin Qt: 5.11.1 Qtractor: 0.9.1 Regards, Ralf PS: I'm sending this to LAU instead of the Qtractor mailimng list, since I susepct this could be from interest for several users, who are not necessarily subscribed to the Qtractor mailing list and Rui usually replies to requests related to his software here, too.