That said, the webUI doesn’t lag at all for me and I have no errors or warnings in the console.
Maybe its just because you’re not using the webmail, that thing is just poor taste.
Are you sure you set everything up properly?
Yes, I tried the full manual installation, docker images and whatnot, all about the same. About the lag… most time it’s not the UI lagging but every action is slow, takes time to load even on high end hardware. AMD Ryzen 7 5700X + 32 GB of RAM + NVMe Samsung 980 Pro 2TB.