Sorry for the lack of information,
Its on Steam, host has good hardware as well as internet connection, client has poor hardware and poor internet connection.
First I had issues with rubber banding on clients, that got solved by changing DefaultEngine config:
[/Script/OnlineSubsystemUtils.IpNetDriver]
MaxNetTickRate=30
NetServerMaxTickRate=30
LanServerMaxTickRate=30
NetClientTicksPerSecond=30
bClampListenServerTickRates=true
MaxClientRate=10000
MaxInternetClientRate=10000
Now client has 0 movement issues, but new issues occured on host, as mentioned, clients animations are incredibly laggy.