I have recently started playing Minecraft with mods, and always when playing I get constant lag spikes every 5-10 seconds in my whole computer. (By that I mean everything gets a lag spike, example youtube and discord.) My suspicion is that I don't have enough ram since it's almost always at about 90% and I'm running a server at the same time. I currently have 8gb and is thinking about upgrading to 16gb because of this issue. I just want to be sure so I don't spend 90 dollars on more ram only to find out it doesn't do anything.