XR500 drops internet

I could some one confirm if the solved firmware update in this thread is the fix to the dropped internet issue or if it is the latest firmware update or both please ? My xr500 has been fine for months but for the last few days it’s been dropping internet every few minutes. Game kicks me out of party speed tests go from 350mbps too 25 mbps. I thought my setting were perfect because it’s been working perfect for months but now I can’t do anything too fix it. I’ve reset to factory settings on the xr500 and on the super hub 3 vm. I put the super hub in to modem mode and on the xr500 i ran the set up wizard just like the first time I got the xr500. This time was different it said internet detected but failed to get the speeds so, I manually entered my speed and continued. Set up everything the same has before and now it’s just simply not working right. WiFi seems ok but wired PS4 and pc internet isn’t right :( really sorry for the essay.