Wynnpack Lags?

For some reason, on my main computer, everytime I use the wynnpack I lag to the point where I can't play. But, on another computer (An older one), I don't lag at all.. (I tried allocating more RAM but it didn't work.)
Any help?

 

Check all of you MC video settings, and make certain that they are not all set at maximum.

 

They're set at decreased particles, fast, no clouds

 

Render distance set at normal?

 

Is there any resource-hogging program in the background? Other games run fine?

You could try leaving wynncraft open and then leave it alone for like 5 minutes.

edit: You may be allocating too much ram, so much that your computer can't handle it. I'm not sure if it would just slow down your computer or straight up stop it though

 

All other servers I play on run fine, even the ones that require me to use a server resource pack. I tried lowering down the allocated ram, and leaving it alone for a couple of minutes, but still - nothing, although I am noticing it is getting better, but still unplayable (0 FPS) when I leave it alone.

(I also tried lowering down my render distance to 7 and 2, but it still lags.)