Lag at Certain Times

Hello! Wynncraft is perfectly lag free for me in the morning, I would say around 150-ish ms. But when it gets to around noon and after, I can feel a clear increase in ping to around 300+ ms, still playable but obviously quite annoying especially compared to the smooth performance in the morning. I play in the Philippines btw, and I've tried switching to Asian servers as a solution but that doesn't seem to work, if anything it seems a bit laggier than NA.

Anyone know why this could be? Thanks!