I have been able to dramatically speed up SI by using Process Lasso by Bitsum.com:
During long synching operations I set "system" and "SI" process to "high" and assign different cores in "CPU affinity" to them. Then I keep SI minimized to not slow it down by screen refreshes. Just did several 100 GB jobs like this and it worked like a charm.
Nice way to speed up SI
Re: Nice way to speed up SI
That should be in the "Tips & Tricks, Advanced Seniors-only" section, IMHO.
Re: Nice way to speed up SI
Thank you, drawing is actually need to be faster 
