Region : Argentina

Model : TL-MR3220

Hardware Version : V2

Firmware Version :

ISP :

Hi. I use long time my MR3220. I have little problem with him. Time to time (or few times in 5min) he disconnect modem. I Use 3270 for LTE with addition adapter (2A). I try many firmwares (and open-wrt) bud this give me nothing. On my old modem, 3131, I have same problem. now I use modem only but need router for all PC. what I can do to remove this defect?
BTW. Modem work ok.

PS. Sry for my ENG.