[Kampott]

I need timers in pawno to be very accurate, are there any way to fix their inaccuracy using a plugin/include?

[RIDE2DAY]

Give a try to this plugin, it fixes many things:
https://sampforum.blast.hk/showthread.php?tid=571505

You have this standalone plugin also, but you must compile it:
https://github.com/udan11/samp-plugin-timerfix

On the other hand, with fixes like those avoid running timers which execute weighty code at the same time. Stay away from this:

PHP код:

SetTimer("FuncOne", 1000, true);
SetTimer("FuncTwo", 1000, true); 


When running weighty code at once the server gets into a "sleep" state, that might cause desync between players since the script is single thread.

[jasperschellekens]

Timers are really inaccurate, try using YSI_Timer for more accurate timers