@Kevin_Z This sypmtoms is not too simple. I made a few workaround steps, but not change antivirus or any security software. The problem started with latest 1.0.5 update. The original problem was that...

@Mehuge RE300 v1 same issue after update to 1.0.5 Build 20191114 Rel. 34543 latest firmware. When downgrade manually to an older available fw, problem solve. So the new fw is buggy.