I have same problem. screen 2560x1600, UEFI mode, secure boot. Grub version 2.04-1ubuntu26.13 Ubuntu 20.04.3
Lenovo Legion 7 16ACHg6 Problems
1. Delay after start,before keypressing is started work 2. Delay between keypressing
I set less resolution, problem 2 fixed, but problem 1 is still here.
I have same problem. screen 2560x1600, UEFI mode, secure boot. Grub version 2.04-1ubuntu26.13
Ubuntu 20.04.3
Lenovo Legion 7 16ACHg6
Problems
1. Delay after start,before keypressing is started work
2. Delay between keypressing
I set less resolution, problem 2 fixed, but problem 1 is still here.