I've TP-Link MR 3420 v2 router connected with BSNL EVDO modem, now I placed my router on second floor and I am getting 3-4 bars at ground floor but sometimes I get 2 bars and that makes me worry. so friends I wanted to know will it affect my wireless internet speed if I am getting 2 bars only? Can poor signal be the reason for my internet speed down and approx how much (%)?