TDAmeritrade communication issues?

Been having some major latency issues using Thinkorswim platform since 3/30/2022, contacted TDA and tech support showed high latency, and also said they had reports of comcast issues communicating with their servers but nothing on their end.  Trying to do my own speed test, ping test, and usage all seems normal.  Xfinity "support" has gotten me nowhere except furious (side note the survey wouldn't accept my review either) with the "tech" repeating that my connection was "fine" and to run yet ANOTHER troubleshoot.  Does anybody have any insight on what I should do?  As a day trader this has already cost me ALOT and I can't seem to get in contact with anybody that can shed some light on what's going on, Thank you in advance.

PS. if an Xfinity rep see's this know I am currently exploring other service providers in my area because of this.