Xfinity speeds drop consistently- 4 tech visits later and no results.

Hello everyone, 

I am at a loss for a solution. I have been dealing with internet issues with Xfinity for at least the last year. For reference, I pay for 2gb internet, WFH, and am a gamer. Regardless of what I am doing I get these spikes that occur around 3-6pm every day that completely shuts down my ability to do anything network based. Whether it is streaming a show, having a teams meeting, or gaming, I lose all connection and lag like crazy. I have had 3-4 tech visits and countless "network checks" through the AI based chat function, and nothing seems to work. In fact, every tech that has come out has treated me like I am an idiot and told me that nothing is wrong and have given me several different reasons why it is my fault. It is either because my modem has "too many connections in it's memory" or just plainly because I am "making it up". In addition, one tech will come install a splitter, then the next will come and say why would anyone do that, then the next tech adds a splitter again. The latest guy told me I am getting too much internet and readded the splitter. I promise you, there is nothing I want less than to have internet issues like this. I have done over 100 internet checks through the xfinity app and through speed test and all of them tell me the network connection is less than 50% of what I pay for. I have been an Xfinity customer for 15+ years and, for the first time, am looking for another provider. If anyone has any recommendations, please let me know. I have switched out my modem by going to the comcast store 2x as well and have run all new cables internally (though some from the exterior to the router I am sure are older). Home was built in 1997.

Thank you!