It is not a simple fix.. This is usually related to ping/latency, what does your traceroute to the server look like?
There are a number of gaming tweaks, but they are all dependent on the quality of the line your ISP provides.
Here is a link to the gaming tweaks (many of those settings can be applied with the TCP Optimizer): https://www.speedguide.net/articles/gaming-tweaks-5812
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