PNG & TIF logo heavily aliased upon export

So I thought this might be a remnant of the PNG issues from back in April, which switching an image file to a TIF solved at the time. But now, whether it's a TIF or a PNG a logo that is pink text is heavily aliased upon export. It looks fine in the Program window, but no matter my export settings, it's very crunchy. I've tried exporting to H264 (1080p @ 15kbps), ProRes 422 HQ, and both have the aliasing issue, so it's not the codec.

There's is a subtle black and white pixel rim around the text which makes me think it might perhaps be a pre-multiply issue.  Is that a possibility to adjust in Premiere? I've never had issues with PNGs before v2018. The logo does not have these black and white pixels natively.

Footage is .r3d 4k. Logo has not been uprezzed. I tried assigning the tif and png different color profiles in Photoshop to no avail.