Lagging for a long period

So I play BF6 redsec on pc on steam and randomly gets a high latence of 200-300 ms of ping every two or three days. At the same period, I tested playing other online games and they worked just fine, so the problem isn't coming from my internet. What's very frustrating is that this occurs especially in weenkends. And lately it's been worse, I've been on 250+ ms of ping since friday, it is monday and the game is still unplayable. Does anyone know a way of how to fix it or if the devs will publish a fix in their upcoming updates ?