awkx

my forge 1.16.4 server is lagging from time to time, especially whem generating new chunks, but sometimes I'll also get the error message that it can't keep it / its overloaded even though we're not moving around very much. It's a 2 player server for me and a buddy. I have allocated 6gb of ram (from my 16gb) and they aren't being used completely, so that shouldn't be the issue I'm running the server on a home computer with a ryzen 7 3700x. I have 5 megabytes download and around 1 MB of upload speed. Any clues? I thought maybe I can use some more jvm arguments but I haven't found proper discussions for 1.16.x servers yet. We are using 71 mods, which sounds like a huge lot but can't be the problem since the server has been like this since we started out with 6 mods. The performance hasn't gotten worse nor better with the added mods. Thanks in advance.