I'm using TrackIR with an Acer Predator X34P and have no issues, whatsoever, to read the MFDs, leaning in a bit.
Testing a Rift S I was annoyed by its low resolution, but leaning in certainly didn't have any problems reading the MFDs, either. Given that the RL MFDs are only 4''x4'' and basically mounted above your knees I think they are pretty spot-on.