System lag and slow rendering on both primary and external monitors when run on NVIDIA card

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As I said, if you’ve got a relatively new USB thumb drive available, you can chroot, from where you can more easily work.

Provide the output of:

ls /boot

Please. And doing it from a chroot environment would make it that much easier.

To enter a chroot environment

  1. Ensure you’ve got a preferably relatively new ISO or at least one with a still supported LTS kernel.

  2. Write/copy/dd the ISO to a USB thumb drive.

  3. When done, boot with the above mentioned USB thumb drive into the live environment.

  4. Once booted, open a terminal and enter the following command to enter the chroot environment:

manjaro-chroot -a

If you have more than one Linux installation, select the correct one to use from the list provided.

If sucessfully done, you should now be in the chroot environment.

But, be careful, as you’re now in an actual root environment oon your computer, so any changes you make will persist after a restart and can cause damage.