Thanks for your question.
I think the problem may be due to a problem with one of the data sources IGB contacts when it first starts up.
if this continues to happen, I recommend opening up the IGB Data Sources Preference window and de-activating the UCSC DAS Data source.
We learned recently that there was a change to the UCSC DAS data source that "breaks" IGB's ability to query and display data from just that source. I'm not sure, but that could be the root cause for the slow-down you're observing.
To de-activate the UCSC DAS data source:
- Start IGB
- Once IGB starts, choose File > Preferences > Data Sources
- You will see a table with many Data Sources listed. De-select the one named "UCSC"
Also, if any of the rows have a red or yellow background, that means that the Data Source is not properly responding during your current IGB session.
The only data source you'll want to keep active is the data source named "IGB Quickload." This is the data source IGB uses to display the various genome assemblies for organisms shown on the IGB Home screen.
All the other data sources can be de-activated and IGB will still work fine. The other data sets are serving data sets like RNA-Seq or ChIP-Seq data. If you don't need any of those data sets, then you can safely de-activate them.
Please let us know if this helps, or not.
Thank you for using IGB and for your question!
-Ann