Just want to add I'm seeing this as well, kernel 6.2 had a load average of less than 1 most of the time, after 6.5 update I see load average of 5.x with processors mostly idle. I have 4 CIFS mounts which might be the cause of this, I have yet to try to debug this. I'm running Ubuntu 22.04 in a Hyper-V machine.
Just want to add I'm seeing this as well, kernel 6.2 had a load average of less than 1 most of the time, after 6.5 update I see load average of 5.x with processors mostly idle. I have 4 CIFS mounts which might be the cause of this, I have yet to try to debug this. I'm running Ubuntu 22.04 in a Hyper-V machine.