WORKING on OnePlus 7 Pro (on OxygenOS 10.0.1) using a slight variant of the numbers posted by notrewound
File: /system/lib64/libbluetooth_qti.so
Find: 09648052
Replace: 09008052
Note that if you replace 64 with 03 as suggested above, the phone still only polls every 24ms - button presses...