Access point and potential switch issues

[ReedahB]

Hello there! I am hoping someone can help me and my family out with what has become a several years issue. We purchased our Lennar home back in 2020 and have always had spotty and concerning internet issues. We have a "switch" or motherboard, that came equipped with the home when purchased, which is housed in some kind of amazon smart house box/area. We have 3 access points, one on each level. We desperately need a resolution as we experience constant buffering issues, spotty service in the basement as well as the third floor. The main floor typically works ok. Can someone please help us troubleshoot or help identify the issues that we continue to experience? This would be so very helpful.

Thank you so much!