Ubook Xpro 2023 pen lag and unrresponsiveness, is it normal?

I followed the instructions here: Need YOUR help fixing my Minibook X touchscreen

I made a backup first so I was never really worried about breaking my computer

If you read through the instructions in the thread and feel like you’ll be able to made a back up and then use guitar tutor pro (gtp) to make the changes outlined, then I’d go for it. If you read the thread and got lost, I would leave it and wait for someone else with your exact model to give it a go.