This issue has been addressed with the 10.02.00.D197a for Spectrum 10.02.00.00. This patch updates the Spectrum Web Client to be multi-threading. Please open a case with CA Spectrum Support for a copy of the 10.02.00.D197a for Spectrum 10.02.00.00.
This issue is also scheduled to be address in Spectrum 10.02.02.00. No specific release date at the time of the publishing of this knowledge document.