Yes, the image quality of high resolution screenshots is really bad, especially when TAA is used, and even to some extent it is not as comfortable as the original resolution.
For EPIC, updating such a tool should not be very troublesome, after all, has achieved very high resolution and good quality image acquisition, but unfortunately does not support too many effects;
After all, in many industries, they prefer to get a high quality image in 30 seconds instead of 30 bad images in 1 second.