Adobe is best but cracks in armor

Adobe Illustrator can open a pdf document, but the performance may be so degraded that it is impossible to actually edit the document.  Adobe's slick answer to this is to import everything initially as links.  So, if you just want to look at it, then performance is fine.  But if you want to edit everything, then it maybe impossible because performance is awful.  On the other hand, I can open those same pdf documents in Affinity Designer ($50.00 program) and performance is incredible.  No problem at all.  Indesign's method of importing these multipage documents is discouraging at best and performance is like Illustrator.  Affinity Publisher?  It opens these pdf documents as if Serif is the company that manages the pdf format instead of Adobe.

Adobe Illustrator can open open Photoshop files, but if there's any kind of effect on the text, then the text will be rasterized. This is like what I would expect if I were using another company's software to open a Photoshop file.  But Affinity Designer, Affinity Photo, and Affinity Publisher can all open that same Photoshop file with live text.

I'm going to tell myself that in order to have the featureset of Adobe software, performance is probably the price that we have to pay.  But, failing to open it's own formats, while software costing a fraction can do it easily, seems to be unforgivable to me.  

Adobe really has to get its act together.  I'm not going to say something ridiculous like, I'm about to switch to Serif's Affinity software, but in some ways they are really making Adobe look bad.  Performance with those programs, with the right hard ware seems to be grossly faster than Adobe.  Photoshop performance has become so bad for me that I can no longer do digital painting with it. I'm not using another $50.00 program, Clip Studio Paint.  But I still need Adobe Photoshop for other things.  It's so frustrating.  I'm paying all this money MONTHLY for Adobe software and I have to use other software anyway.