BBot laggs very much when Tibia is minimalized

[Kiecus]

Everything works fine when Tibia window is open, but when i minimalize it bot walks very slowly, everything is laggin, i got this problem on my 2 computers and nothing helps, it cant be my internet connection or computer problem, so what is it? Can any1 help me? Maybe i did something wrong, but I dont think so cuz im using bbot for a long time and I never had problems like this :/

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Ill give rep+ for every help, even if it wont work Pleaaaase i cant bot few chars cause it walks so slowly that cant even run after swamp troll (