Count-up Timer

Hey all,

I've got another question. I'm trying to implement a timer into my game that doesn't count down, but counts up from 0. The way I'm trying to get it to look is like this: 00:00 then every second that goes by will add 1 to the time until it gets to 60 seconds which will cause the timer to get to 01:00 to represent 1 minute. However, I've looked up a few tutorials on how I can attempt to get this to work, but all that ends up happening is the timer will still be counting normally yet the clock looks like this: 00:10, which means 1 second. 10 seconds looks like this: 00:100. If anyone knows a simple way of fixing this, that would be great.

Currently I have two text boxes and two global variables with a static colon between them (three text boxes and two global variables in total). If there's a way I can do it without multiple text boxes I'll take it, but if it's easier with multiple variables and boxes then that works for me too.

Actually, would you know how to prevent the game from decreasing it's frame rate after, like, 7 seconds? I was doing to reading on dt and I can't seem to make heads or tails of it. Any help would be great.

It depends on many reasons, maybe you created too many objects and not destroy them(they still outside of your viewport), use too many effects, ..etc.