hrydgard/ppsspp — pull request #5324 by raven02 (2014-02-03 14:11:51+00:00)
Title: Delay thread only when grainsize is greater than 256

I'm not sure it is truely correct or may be just coincidence .Looks like delay thread only happen when grain size is not the default size which is 256 .Those games in #5305 which require delay thread have the grainsize > 256 ( 512, 2048 etc)