Welcome to Manjaro!
- Please read this:
How to provide good information
and post some more information so we can see what’s really going on. Now we know the symptom of the disease, but we need some more probing to know where the origin lies… - An
inxi --admin --verbosity=7 --filter --no-host --widthwould be the minimum required information… (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
Also, please copy-paste that output in-between 3 backticks ``` at the beginning and end of the code/text. - Also post the output of
xrandrto compare FPS and Hz.