Originally Posted by
Weston@HPTuners
This is an issue that I've been looking at recently too... The rendering of text display objects (ie Text, Text Data, and simple Lap Counters & Timers) was originally setup for 720p, and was passable but not ideal for 1080p. At higher resolutions like 4K, this can be more noticeable. Fortunately, text inside of other displays (Gauges, graphs, etc) should be unaffected, as it is already higher quality within that display.
In any case, expect to see an improvement to text rendering in the next release, version 3.4.8... It will apply when the Picture Scaling Quality is set to "Good" or higher; that will tend to affect your output videos but not the preview (which is usually set to a lower quality for more responsive performance). It should also be slightly better on Mac than on Windows due to the way these platforms render text.