I am sorry, but there is no way you can display that without a loss of quality.
However, the way you reduce it can reduce the amount lost. For example, you could first open up the TIFF file in Photoshop, Gimp, or other similar software. Then resize it to 1920x829 using Bicubic Sharper resampling. Then save it as a high quality (90 or better) JPEG or better yet a PNG.
If that does not work then you will need to use a larger font on the original DWG and then reduce as above.
Thanks for the excellent reply . I'll give it a try at work where they have Photoshop. Like you say, I can make the font larger and that will help the readability. I also wondered if I changed the drawing scale from 1 inch = 6 inches to 1 inch=12 inches would help. The reduction in size to fit a 1080p screen from a smaller drawing should have less of of an impact on resolution.. What do you think?