The fact that you have so many timers ticking at very small intervals (10 ms, 500 ms and 1 seconds) is telling me that your computer is so busy spending most of its processing time to keep up with all the various timer.tick events...
There's really not much you can do unless you run your app on a super-fast multi-core system OR increase the intervals of your timers, especially the one that is set at 10 ms.