Based on my understanding the arm_boost=1 is now default on Raspberry Pi OS installs for the Pi 4. Not overclocking quite as much: 1800 vs. 2000. Doesn't require the voltage to be increased. IMO, not concerned with upping the min core frequency, just the turbo frequency to reduce the commercial skip runtime.
per the linked Raspberry Pi documentation on my last post:
" arm_boost` (Raspberry Pi 4 Only)
All Raspberry Pi 400s and newer revisions of the Raspberry Pi 4B are equipped with a second switch-mode power supply for the SoC voltage rail, and this allows the default turbo-mode clock to be increased from 1.5GHz to 1.8GHz. This change should be safe for all such boards, but to avoid unrequested changes for existing installations this change must be accepted by setting arm_boost=1
.
IMPORTANT New Raspberry Pi OS images from Bullseye onwards come with this setting by default."
Working ok now with the Flirc case running Channels on Raspberry Pi OS. I'm waiting on another Pi to be dedicated to Channels using the Channels image. Hence asking some questions before I get started 
So the config.txt file exists in the Channels Image? Based on some browsing the Hassos forums, seems that it's there but may need some searching partitions to find it.