SID playing at wrong speed

It’s likely the SID uses a raster interrupt, and was designed on the opposite system as yours (E.g. you’re on an NTSC system playing a PAL SID, or visa versa). Normally Shredz64 can compensate for this, but only if the video standard is set properly in the SID file. Sometimes this video standard isn’t set, and Shredz64 doesn’t know what speed the SID is supposed to be played at. The video standard flag is at byte 77 of the SID file, bits 2-3. If it is set to 00, the video standard was unset. Manually set it and save the file and it should play properly. If the file is supposed to be a PAL file, set it to 01 - for an NTSC file, set it to 10.

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