I've just installed Arch Linux with the Zen kernel, some basic packages, and Blender. However, upon opening Blender, I encountered severe lag when moving objects. Moreover, I faced an issue where I couldn't select a video card in the preferences. It was Blender from Steam. Later, I decided to install Blender using Pacman, but I encountered the same problem, now with the error message: "Installation validation failed: No module named 'aiohttp' [dependencies.py:113]. I'm not sure what steps to take to resolve this issue..
Also, everything was okay on the previous rig(GTX 1050Ti and AMD Ryzen 7 1700x) and standard kernel(not zen)
If you haven't had a chance yet, I strongly suggest reading the Arch Wiki (wiki.archlinux.org) entry on Blender. There are a couple entries in the article that may be relevant to fixing this for you.