Mine is slightly different cuz its a 5DSR, so theres no separate option for LP Filter cancelation cuz it runs all the time.

I leave all the other corrections enabled anyway. Not sure if it slows the camera down since its a slow camera anyway, what with its "vintage" image processor digesting about 70MB per shot.

According to the second screen below, sometimes my "enabled" corrections arent really active anywho. I have two OEM lenses and three "other".

Have you personally found that the corrections are actually slowing down your MkIV ? Are your cards fast enuf for your camera ? I use Sandisk "Extreme" just cuz hi rez files, raw plus jpg, are always so huge.
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Take my comment with a grain of salt / need to investigate further as I don't have the same body.

I belive the info is proprietary to Canon, and therefore, needs Canon DPPv4 at access from the RAW to realize into the converted image. If accurate, that means overall larger RAW files, slower processing in the camera (aka burst speed / image count) and the need to process your RAW via DPPv4 first.

You should 'see' the results in the JPEGs where the DLO processing is applied, rather than captured into the RAW for DPPv4 processing. My comments above are similar to the observations at The-Digital-Picture for the EOS 5DIV.

Other comments I reviewed speak to an example from Fred Miranda using an EOS 5DIII, where things may have improved / changed for the newer 5DIV model. https://www.fredmiranda.com/forum/topic/1097029/

Your RAW images always look flat, lack contrast, lack sharpening, lack lens corrections, and lack noise processing. The only way they can "look" different is because you're viewing them with a digital editor that applies some of these processing controls against the RAW image. That's a simple reality of RAW.

If you open a Nikon NEF into the Nikon software, it will pick-up the camera settings, including the picture control and will display that processed version of the image.

If you open a Canon CR2/CR3 into the Canon DPP software, it will pick-up the camera settings, including the picture style and will display that processed version of the image.

If you import any camera's RAW file into Adobe Lightroom, Adobe provides a default amount of sharpening and noise reduction and applies the Adobe Standard profile to the image. These are minor changes, easily undone / changed, but also no longer present the raw RAW file.

We have no video tape of your life nor examples of the images you see, so we can't say exactly which applies to your prior observations.