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 --width
would be the minimum required information for us to be able to help you. (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. - Very probably no, as a chain is only as strong as its weakest link and you’d need to disable the 75Hz monitor to get 114 Hz on the external one…