Latency on Xbox One S test higher on new replacement XR500 than previous

I recently received a replacemnet XR500 because my previous on was having issues. I've been told it's not the most accurate thing, but I have been running some speeds tests also off of my xbox one through ethernet, in addition to regular tests on the computer, also by ethernet. I noticed since first starting to use that the latency number through that test is about 10 ms higher than it was on the previous XR500 I had. I used to get around 60 ms latency but the new one usually gives me around 70 ms. Even after noticing this I switched back to the old modem to run the test and got about 60 like normal. Then I hooked the new one back up and got about 70 again. Then I switched them around like that again and still got about 10 ms higher on the new one. I've been playing around 5 days since getting the new one and the latency number still hasn't gone back to what I used to get. I also run tests on speedtest but on there I get about the same ping that I used to get, being about 11 ms. Also I tried factory resetting both the router and the xbox itself, but still hasn't changed anything.                  Any Ideas? Like I said I know this isn't regarded as a very accurate test but the fact that I've put them side by side at the same time and get noticeably different results on my new replacement router  has me concerned that I'm getting worse latency than I should be with this new one.