Questions about R5 and moire

I am a very long time pro photographer and user of many different high end digital cameras but, I have used Canon DSLR's and mirrorless models for quite some time now. My main camera is now an R5. I am extremely happy with it in almost every way possible.

One thing that I have always noted about Canon digital cameras in the past is that their output was tempered by a very practical consideration for making sure that there was always - except for the 5Dsr - a very effective anti-moire filter in front of the sensor. It may have sometimes limited the appearance of sharpness of output in some cases, but it was more than made up for in being able to have confidence that moire would not ruin some important pictures. The filters didn't eliminate moire, but they sure did make it exceedingly rare.

Now to the meat of the matter. Last week, I shot a family portrait job. It was certainly not an easy one to do, because of the limitations of time, location and lighting conditions, but I overcame those issues in general with good flash lighting techniques in a difficult outdoor environment. I would prefer not to show the pictures, because my client has not even got their pictures yet, much less given me permission to show them here.

In this shoot, I got the most and worst moire I ever got in any shoot I've ever done, due to my clients' clothing. They did wear the exact patterns that I specifically warned them not to wear when I arranged the shoot - small regular, repeating patterns in the material, but this has happened before, using other cameras, with no where near the amount and frequency of the instances of moire in this set of pictures, appearing as both large monochromatic false swirling patterns and as those same false swirls with multicolor bands as well - all the typical false patterns of moire one could expect. It was a processing disaster, as I've had to use incredibly time consuming work-arounds to partially or wholly correct those afflicted pictures.

So, here's my question to the rest of you Canon R5 owners out there: have you noticed more moire in your results than with previous Canon cameras? Does anyone know if the anti-moire filter in the R5 is weaker than in previous Canon cameras? Any information specifically about this would be welcome. And, finally, is this is a problem specific to R5, or is it just a run of bad luck, where all the elements of the shoot came together to produce this woeful outcome, and will not likely occur again, or at least not any more than would happen with any another camera?

Finally, besides using the Lightroom anti-moire tool and bringing the sliders down on the Clarity and Sharpness controls, is there anything else which is even better at fighting moire, with less image softening, in post?

Well, now it's back to the horrible task of completing my post work on that same family portrait job.