Any help would or a potential answer would help

https://preview.redd.it/k16c83m40ybg1.jpg?width=2460&format=pjpg&auto=webp&s=5631330b8db712c395cb8cd67922c3e442d8d753

This issue started happening since the first of January of this year for me where i would get a consistent ping of 3-4k then drop down to 2k ping when everything is loaded in even in solo private servers, is this an issue with roblox mobile or is it more of an ISP/Device issue(though my device is pretty new, only being a year in) any suggestion/help with this issue would really help🥀