I have this exact same issue. Ubuntu 20.04 LTS, ultrawide 2560x1080 screen, Grub version 2.04-1ubuntu26.6
Only happens with UEFI mode. System spec: CPU: ryzen 2600x | Motherboard: MSI B450 A-PRO | Graphics: GTX1060 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/480159 Title: grub console is ridiculously slow To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/480159/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs