There is cure for the SIR 1 delay prob:
http://www.rocksonics.com/FreePlugs.htm
SIR Delay adds a fixed 8960 sample delay to the audio path to compensate for the latency of the popular SIR Convolution Reverb in hosts that do not support plugin delay compensation. This plugin allows the use of the popular SIR Convolution Reverb as a send effect in hosts such as Cubase SE and many others. To use this compensator simply insert the plugin in all channels or groups where the SIR reverb is NOT being used. This will time-align (delay) these channels so they are in time with the channel(s) being processed through the SIR Reverb. For more information on the SIR Convolution Reverb and how to use the SIR Delay Compensator see these links:
Delay Compensator - FREE!
master outputs (the processor will produce no output when used as a SEND effect).