Some of the (Many) Limitations of Affinity Designer

I've been using Serif's Affinity Designer for about six months now, having been forced out of the Adobe ecosystem due to it being financially untenable. While there's still a lot of depth to the program that I have yet to explore, I feel there's some value in documenting what I've found to be its limitations as it pertains to the work that I do, particularly since it seems hard to find solid information on what Designer can't do.

For those unfamiliar with the product, Affinity Designer is a vector illustration app by Serif positioned as an affordable alternative to Adobe's Illustrator. It is available as an app for iPad as well as an app on the desktop. I use a Microsoft Surface so my experiences pertain to the desktop app on Windows. I understand the app / MacOS is the primary focus for Affinity, so certain things (like performance) may be expected to be better there than what I experience on Windows.