You have not provided enough information.
This makes it difficult for Members to do more than guess at a possible solution to your issue.
However, you might try switching to Wayland if you haven’t already, and running with a 125% zoom. Compensate with other settings where possible.
That was a guess, too. 
I know you’ve seen this before, quite recently; please actually read and understand your obligations when creating a Support topic.
Thank you in advance;
Welcome to the Manjaro community
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Regards.