I think shielding can help, but otherwise I think you should consider your DAC and room acoustics.Agree with Erik. My digital suffered until I put together a transport, cable, and dac that was able to control jitter. Also works very well with my streamer.
I haven't suffered from digital glare in ages.
Treating the room is always a must no matter what format you use.
In my quest to remove glare I tried using so called "digital" cables such as JPS and others, but they weren't as lively sounding as a good quality shielded cable. I'm not putting down these digital PCs, just saying in my system good shielding was an improvement.