Sadly, I can't record something that feels like input lag but isn't on my end. I would have to set up an intense setup to record mouse click, the moment bullet fired on my screen and the moment the kill was confirmed from the server, sync them up and compare them from different matches. I don't have the time nor equipment to do this. I found this clip (from 0:38 to 0:46) a while ago on youtube, where it shows an enemy is moving much faster than they're supposed to. This happens in a lot of matches(not all, but in quite many of em).

I know how to improve input lag on my PC, but this slight lag in some matches seems to come from server side. My mouse movements feel responsive on the client and my network stats are all good, but the hit registry in some matches feels slightly delayed and enemies at times are moving ~25%(roughly estimated) faster than they're normally supposed to. Really noticeable when they counter strafe or peek(in this case aka ferrari peek).

I either use clumsy or VPN to increase ping. When I feel like I'm being robbed in a game, just increasing the ping slightly then makes the gunplay feel smoother and easier. Hits register when they're supposed to, enemy movement feels smoother. I don't understand this netcode Riot has built