At the IBM Conference last week, several folks were very interested in this snippet of code that IBM gave me in 2018 for an issue we had where our CM was taking 20+ minutes to start. This was applied to our 10.2.2 FP9 region and has worked AWESOMELY as our start times are now under 5 min (Oracle CS)
In D:\Program Files\ibm\cognos\c10_64\bin64\bootstrap_wlp_winx64.xml, update the DCMCacheFetchSize to 5000 as follows
<param condValue="IBM" condName="${java_vendor}">-DcmcacheFetchSize=5000</param>
Restart the services.