No surprise this has improved your streaming. I've experimented with modems,routers, and lps to power them over the years, all can substantially improve SQ. Good idea to provide lps with greater amperage capacity than equipment requires, less heat, more durability minimally, SQ may also be improved with these higher quality supplies. I continue to find the OpticalRendu superior solution even with my new custom built streamer. For another notch up in sound replace your generic FMC with OpticalModule powered by quality lps. On top of that you can replace the existing or standard optical transceiver with the Finisar Sonore offers, I'm waiting on the enterprise level Finisar transceivers to come back into stock prior to experimenting here. The better transceivers have measurably less jitter vs the standard variety.
In any case, you've discovered every single component in streaming chain has bearing on SQ.