There have been significant changes in the timeline since India stopped processing the temporary visas on Sep 21. Here are a few updates from me and a few friends who have applied recently in Toronto jurisdiction.
1. For applications before Sep 21 - Acknowledgement - 10 days. Processing Time - 2-3 weeks. (First hand info from 2 friends whose OCIs got processed - Applications were filed late Aug and early Sep)
2. For applications after, but close to Sep 21, (I'm in this boat - applied on Sep 22) - Acknowledgement - 14 to 16 days. Processing time - 3-4 weeks (it's been 3 weeks since I received the acknowledgement and I'm hopeful that the application will be processed in the next few days)
3. For applications filed in October - Acknowledgement is now taking 3 weeks (or even longer - this is expected to go beyond a month in the coming days, as per BLS as they are flooded with OCI applications after India stopped processing temporary permits/visas). As per the info shared at the BLS center, the total processing time from the date of filing the application at BLS is about 3 months. This is a huge dip from the Aug/Sep processing times and this time is only expected to increase in the coming days/weeks. The only way this time can come down is when India starts processing the e-visas (the most popular, but least financially rewarding option for the Consulate).