Xbox Series X Terrible Lag?

I’m finding myself clambering the same ledges multiple times, skipping backwards and/or forwards at random intervals when walking in straight lines, grenade lob delays… I’ve played MCC and halo 5 with no problems like this on my Series X. I’ve toned down settings (setting to performance instead of quality). Does anyone have any insight or recommendations?

I know my home internet is moderately poor (10-25mbps at any given time), but I am connected via Ethernet not wifi.