Anonymous I think that would cause more issues, due to the control of the charge current being something OTHER than the headset itself.
To break it down, the headset is constantly MONITORING the power input. When plugged into a standard (non-smart) power brick or standard USB port, the headset will take in charge until it reaches ~80%. The HEADSET itself then will throttle the charge current down appropriately as the headset software sees fit.
When connected to a smart charger or a cable with a built in smart charging, the BRICK/CABLE is the one controlling the power reduction. So from the headset's POV, it is monitoring the charge current and when it drops without the headset commanding it, it would throw the error/popup. Its the "unknown" drop in charge current that is the issue, not the drop itself.
I think the only way is to maintain a constant power input to the headset, and let the headset manage it. This is fine, if your USB port (or cable) has the juice to keep it charged. So the options are to plug into the USB port directly without a power injector (slow charging, but all i have seen is slow or normal rate of discharging during PCVR), or buy a "power injector" cable that separates the data (to PC) and power lines (to charging brick). The problem is that the "power injector" cables that are available all have a smart charging brick built-in, which works on the earlier Quests and the Q3 original software pre-V62.
Honestly, the Meta cable is really good, has faster speeds that I had on other cables, and mainly my favorite thing is that I can finish a race without the black screen and wrecking my friends. The only problem on that front is that is doesnt charge at all, and doesnt seem to slow the discharging at all.
As stated in my previous post, I have a few more tests to run once all my new components get here. I have been able to return most of my purchases thus far and recoup some money, but I cant get rid of my Meta branded cable until I find an alternate solution, so I am out that $80 bucks.
Should have listened to the old addage "Buy once, cry once" and bought this cable to start with and I never would have fallen into this deep rabbit hole...
