The site is generally pretty fast for me and I have no lag anywhere (even the leader board) except whenever I view my current missions and/or finish one.

My screen often freezes up and it can take from a minute to five to load after I click "complete."

Can this be sped up? It's driving me nuts. @_@

This may actually be a problem with your computer, not the loading of the site. Mine usually loads within seconds, 3 being the absolute most I've had to wait for the window to pop up after hitting 'complete'. o.o

Case in point, I just had a mission finished myself, apparently. Not only am I done collecting rewards for the mission, but I've also already checked stable for level-ups, gone back to Esior's Haven, and reset a Sylesti on another mission before coming back here to type this.

What should I check then?

Everything else loads perfectly. It's a fairly new computer with a fairly fast connection. 0_o

I will take a look when I get a chance to see what could be causing the slow loading.

Could having too much of mission in the "history" be a problem?
I used to load that page faster and since I can send 5, I tend to
send them much and... well it got a bit slower... o.e"
Having 8 page fully filled of "old missions" and a 9th one that is
filled a bit, make it a bit hard to make it NOT lagging a bit.
So I wondered if you couldn't just had too much "Old
missions"? owo"

I'm fairly positive the page isn't very well optimized.

So yes. The more history, the longer the wait. It's an easy thing to fix, but it's a little time consuming.

I will try to get it done sometime soon though.

Yeah, anything getting too much of "History" always get laggy~ XD
It's something I learned the hard way~ ^w^"
Either we find a way to "delete" them from history(and they still
counts toward mission completed), either they just get "wiped"
out naturally after a certain number of pages, deleting the oldest?~ :3

I'll just make it where it loads the mission on demand rather than all at once. It's what I did with the Leaderboards.

That's actually even better than my idea!~
I think it's a good idea~ <3
Like this, one who "don't care" about history don't get
"bothered" and if you wish to view it and did lots... well
your prob~ XD
I sometime like to check recent mission to see the
"improvement" of my Sylesties as they gain lvls, but not
always~ :3

I have had this problem as well so I'm glad to see I'm not alone! My tablet loads it in 2 seconds but my awesome PC lags like crazy.