QtWidgets uses software rendering. It’s completely fine on my 4K display except for a single application, KOrganizer, where it actually takes a while to redraw the UI. You can implement hardware rendering badly too (see QtQuick which is noticeably less responsive than QtWidgets)
Truat me, you ro not want to experience CPU based rendering on high resolution displays
QtWidgets uses software rendering. It’s completely fine on my 4K display except for a single application, KOrganizer, where it actually takes a while to redraw the UI. You can implement hardware rendering badly too (see QtQuick which is noticeably less responsive than QtWidgets)