CI4 sessions still not being deleted

I've read the other threads on session files not being cleaned up on CI4. I am suffering the same issue, with hundreds of session files when it is only me accessing the site.

I've checked which php.ini file apache is using and have set the following values:

Code:

session.gc_probability = 1
session.gc_divisor = 1000
session.gc_maxlifetime = 1440

I've also located all other php.ini files and set the same values. I've checked my syslog and it does appear that php/sessionclean is running periodically. Beyond writing my own cleanup routine I'm at a bit of a loss as to how to fix this or even go about debugging what might be going wrong?