This cannot be fixed in the program itself, as it is not really a bug.

While timer resolution (which is provided by kernel) has virtually no
impact on your usual tasks (browsing the web, reading your email, even
playing mp3s, where the notes are just prerecorded, not generated on the
fly), for serious midi/audio applications, you need a high enough
resolution that can guaranty that recorded/played back notes are exactly
on queue, not a little bit later.  For example, if 3 notes are supposed
to be played at (arbitrary unit) 0.058, 0.059, and 0.06... If your timer
resolution is 0.01, then all these 3 notes will be played together at
0.06. So your arpeggio gets turned into a flat chord on playback! To
play this arpeggio properly, you would need a higher resolution timer
(0.001 or less).

So, what the program is saying when you get this error message is:
"Sorry but your current kernel does not provide a fast enough timer for
proper operations". And there is nothing the program itself can do about
it, you just need a different kernel.

-- 
error when opening Rosegarden program: "System timer resolution is too low"
https://bugs.launchpad.net/bugs/67568
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