Hi, I have a similar issue - after a period of inactivity on the PC, OUTLOOK.EXE starts to consume all the CPU. I have re-installed Office 365 to no avail.
I have both add-ins active and Outlook reports that the Anti-Spam add-in "caused Outlook to switch folders slowly".
I have tried disabling either/both add-ins with inconclusive results.
I will do some more testing but please can Kaspersky advise whether my problem will be fixed with the same patch that is currently pending.